英语语法练习(经典)

Exercise

1. ________, a car knocked her down.

A. Going to work

B. As she went to work

C. While going to work

D. Having gone to work

2. A Dream of the Red Chamber is said ________ into dozens of languages in the last decade.

A. to have been translated

B. to translate

C. to be translated

D. to have translated

3. A good many houses _______ knocked down by the earthquake.

A. was

B. were

C. is

D. are

4. A high salary, together with good working environment, ______ high efficiency.

A. ensures

B. is ensured

C. ensure

D. has ensured

5. A man cannot be really happy if ______ he enjoys doing is ignored by society as of no value or importance.

A. what

B. that

C. it

D. which

6. A series of debate between the lectures ________ scheduled for the next week.

A. are

B. is

C. have

D. has

7. It is recommended that the project _______ until all the preparations have been made.

A. is not started

B. will not be started

C. not be started

D. is not to be started

8. A severe weather alert is now in effect for _______ southern Ohio and Indiana.

A. whole

B. the whole

C. all of

D. the all

9. A student can not obtain knowledge without studying, ________ a farmer can get harvest without ploughing.

A. any more than

B. no more than

C. no less than

D. much more than

10. A thief who broke into a church was caught because traces of wax, found on his clothes, ________ from the sort of candles used only in churches.

A. come

B. that came

C. coming

D. had come

11. According to the timetable, the aeroplane for San Francisco _______ at 8 o’clock in the morning.

A. will leave

B. is going to leave

C. has left

D. leaves

12. After ________ for the job, you will be required to take a language test.

A. being interviewed

B. interviewed

C. interviewing

D. having interviewed

13. After ______ seemed an endless wait, it was his turn to have the interview.

A. that

B. when

C. what

D. it

14. ______ after a long walk, I couldn’t move a step farther.

A. Having worn out

B. Wearing out

C. To wear out

D. Worn out

15. After having gone________ far, George did not want to turn back.

A. enough

B. much

C. such

D. that

16. After supper, he asked her if she felt like_________ a walk.

A. take

B. taking

C. to take

D. have taken

17. After twenty years abroad, William came back________ his hometown severely damaged in an earthquake.

A. only to find

B. find

C. finding

D. only finding

18. ________ air is to man, so is water to fish.

A. Like

B. As

C. Since

D. Just

19. Airline companies today require that all ______be inspected before passengers are admitted into the waiting rooms.

A. luggages

B. parcels

C. luggage

D. parcel

20. All ________ is a continuous supply of the basic necessities of life.

A. what is needed

B. for our need

C. the thing needed

D. that is needed

21. All public vehicles ________ because of the flood, we decided to walk home.

A. having canceled

B. have been canceled

C. were canceled

D. having been canceled

22. All substances, _______ , take up space.

A. whether are liquid or solid

B. whether are they liquid or solid

C. be they liquid or solid

D. no matter they are solid and liquid

23. All the communists ________ the people instead of being served by the people.

A. are supposed to serve

B. are opposed to serving

C. are subjected to serving

D. object to serving

24. Although Alice has been to the mountains many times before, she still loves visiting_______.

A. it

B. them

C. one

D. those

25. America will never again have as a nation the spirit of adventure as it ______ before the West was settled.

A. could

B. was

C. would

D. did

26. An Olympic Marathon is 26 miles and 385 yards, approximately _______ from Marathon to Athens.

A. distance

B. the distance

C. is the distance

D. the distance is

27. Anna was reading a piece of science fiction, completely _____ to the outside world.

A. being lost

B. having lost

C. lost

D. losing

28. Another man is reported _______ in the snowstorm yesterday.

A. to be killed

B. being killed

C. to have been killed

D. having been killed

29. Art is subjective ______a personal view of history is presented through it.

A. in how

B. in what

C. in which

D. in that

30. "As a result of El Nino, it is unseasonably warm this winter."

“___________.”

A. So is it

B. So it is

C. So it does

D. So does it

31. As Commander-In-chief of the armed forces, I have directed that all measures ________for our defense.

A. be taken

B. would be taken

C. to be taken

D. had been taken

32. ______ as it was at such a time, his work attracted much attention.

A. Being published

B. Published

C. Publishing

D. To be published

33. As long as you_______ the money back promptly, I'll lend it to you with pleasure.

A. return

B. will return

C. have returned

D. returned

34. Astronauts can be affected by loneliness. They may have to sit in the spacecraft for weeks with very little to do and no one to _______.

A. talk to

B. talk

C. talk sense

D. talk about

35. At 60, your brain possesses almost four times as much information__________ at age 21.

A. as it was

B. as it did

C. as it had

D. as it had been

36. At the beginning, John found _____ get along with Tom, but later he knew he was wrong.

A. that it held to

B. it hard to

C. difficult to

D. that difficult to

37. Because of the great speed of light, we see a lamp light up almost at the exact moment _____.

A. we turn it on

B. when we turn on it

C. that we turn on it

D. which we turn it on

38. Because of the unexpected changes, they postponed _______ us an answer.

A. giving

B. have given

C. to give

D. to have given

39. Before the first non-stop flight made in 1949, it______ necessary for all planes to land for refueling.

A. would be

B. has been

C. had been

D. would have been

40. ______ before we depart the day after tomorrow, we should have a wonderful dinner party.

A. Had they arrived

B. Would they arrive

C. Were they arriving

D. Were they to arrive

41. Besides being expensive, the food tastes_________.

A. badly

B. too much bad

C. too badly

D. bad

42. Bill always does ______ he pleases, without regard to the feelings of others,

A. however

B. that

C. whatever

D. which

43. Bill wasn’ t happy about it, and _________.

A. I neither

B. I wasn' t either

C. neither I was

D. either was I

44. Bob has sat at the table for a couple of hours and ______ considerably more wine than is good for his health.

A. drank

B. drink

C. drunk

D. drinking

45. _______ book is interesting to her although reading is her hobby. She likes reading literature, not politics or economics.

A . None of B. No C. Not every D. All

46. But in the present organization of the Olympics there is far too much _______ encourages oppressive patriotism.

A. which

B. when

C. that

D. why

47. Buying clothes _____ very time-consuming as you rarely find things that fit you nicely.

A. are

B. is

C. have been

D. had been

48. By 1990, Australia had ______ than it had people.

A. 15 times sheep

B. 15 times more sheep

C. 15 more times sheep

D. 15 times sheep more

49. By 2005, production in the area is expected to double _______ of 1992.

A. that

B. it

C. one

D. what

50. By no means ______ look down upon the unemployed.

A. we

B. should we

C. should not we

D. we should

51.By studying geometry, students can learn how ______ logical arguments through deductive reasoning.

A. develop

B. developing

C. to develop

D. to be developed

52. ______ by the drought, many plants and animals in this area died.

A. Affecting

B. Affected

C. To be affected

D. Having affected

53. By the end of last term, he had written to a number of colleges, received three letters of acceptance, and _______two campuses.

A. saw

B. seen

C. seeing

D. to see

54. By the year 2005 scientists probably______ a cure for cancer.

A. will be discovering

B. will have discovered

C. are discovering

D. have discovered

55. ______ can help but be fascinated by the world into which he is taken by the science fiction.

A. Everybody

B. Anybody

C. Somebody

D. Nobody

56. Careful surveys have indicated that as many as 50 percent of patients do not take drugs_____ directed.

A. like

B. so

C. which

D. as

57. Colleges and universities across the nation have decided to do more than _______about the rise in student cheating.

A. talk

B. talked

C. to talk

D. talking

58. Come and see me whenever _______.

A. you are convenient

B. you will be convenient

C. it is convenient to you

D. it will be convenient to you

59. Could you tell me _____ in the Russian alphabet ?

A. how many letters are

B. how many letter are there

C. how many there are letters

D. how many letters there are

60. David failed to pass his final exam. I regretted ______ to help.

A. not to be able

B. not be able

C. being unable

D. being not able

61. Desert animals require a means of remaining moisture in such hot weather if they are____.

A. surviving

B. to survive

C. to be survived

D. survived

62. Despite much research, there are still certain elements in the life cycle of the insect that _____ not fully understood.

A. are

B. were

C. is

D. was

63. If I had remembered ______ the window, the thief would not have got in.

A. to close

B. closing

C. to have closed

D. having closed

64. It was recommended that the company ______ in new property.

A. invest

B. would invest

C. invested

D. should have invested

65. Dick regretted ______ to the meeting last week.

A. not going

B. not to go

C. not having been going

D. not to be going

66. Did you notice the little boy______ away?

A. took the candy and run

B. take the candy and run

C. taking the candy and run

D. taking the candy and running

67. "Do you want to see my ID card or my driver’s license? “_______ will do.”

A. Every

B. Each

C. Either

D. Both

63. "Does anybody want an extra ticket to go to the movies?" "Who would you rather_______ with you, George or me?"

A. to go

B. have go

C. have gone

D. going

69. Don't get your schedule _____; stay with us in this class.

A. to change

B. changing

C. changed

D. change

70. ______ doubt there are a lot of natural resources in this country.

A. Little do we

B. Little we

C. Seldom did we

D. Few do we

71. Each man and woman must sign _____full names before entering the examination room.

A. his

B. her

C. their

D. one's

72. Each of you ______ responsible for what has happened.

A. are

B. is

C. am

D. be

73. Even though they _____ for twenty years, the two neighbors don' t know each other very well.

A. have been living side by side

B. have been lived side by side

C. had been living side by side

D. having been living side by side

74. Every product ______ before it is sold.

A. needs to examine

B. needs to have examined

C. wants examining

D. wants to exam

75. Excuse me, but it is time to have your temperature ______.

A. taking

B. take

C. to take

D. taken

76. Five minutes earlier, ______ we could have caught the last train.

A. and

B. but

C. or

D. so

77. Food is to the men _____ reading is to the mind.

A. that

B. winch

C. what

D. so

78. _____ for my illness I would have lent him a helping hand.

A. Not being

B. Had it not been

C. Without being

D. Not having been

79. _____for this suggestion.

A. There is something to be said

B. There has something to be said

C. It is something to be said

D. It has something to be said

80.______for your help, we' d never have been able to get over the difficulties.

A. Had it not

B. If it were not

C. Had it not been

D. If we had not been

81. Freezing is now one of the ______ of preserving meats and vegetables.

A. most methods

B. most important method

C. most important methods

D. most importantly methods

82. ______ from the 10th floor when the policeman pointed his gun at him.

A. Jumped down the thief

B. Down the thief jumped

C. The thief jumps down

D. Down jumped the thief

83. George remembered some talk about his mother _____several days before he was born.

A. injurying

B. having injured

C. being injured

D. having been injured

84. He______ in Japan as he left by ship last month.

A. ought to arrive

B. ought to have arrived

C. should arrive

D. must arrive

85. He _____ live in the countryside than in the city.

A. would rather

B. had better

C. may as well

D. prefers

86. He ______ to work by bike instead of driving to my work place.

A. advises me to go

B. suggests to go

C. suggests me to go

D. advises to go

87. He appeared ______ with our team' s performance.

A. satisfying

B. to be satisfying

C. to satisfy

D. satisfied

88. He asked me to look for a house_____ he can use to do business.

A. where

B. so

C. which

D. in which

89. He asked us if we would _____ to share a room.

A. consider

B. approve

C. accept

D. agree

90. He couldn't say what it was _____bothered him.

A. it

B. which

C. that

D. as

91. He decided to go to the museum as soon as he_______.

A. finishes what he did

B. would finish what he was doing

C. finished what he did

D. finished what he was doing

92. He didn' t_______ me for returning his money that I found.

A. so much as thank

B. so much as to thank

C. as much as thanking

D. so much as thanking

93. He didn' t allow ______ in his room, actually he did not allow his family ____ at all.

A. to smoke… to smoke

B. smoking…to smoke

C. to smoke...smoking

D. smoking….smoking

95. _____, he does not love her.

A. As he likes her very much

B. Though much he likes her

C. Much although he likes her

D. Much though he likes her

95. He gave ______ came into the room a newly-published textbook.

A. who

B. whom

C. whoever

D. that

96. "He gave me _____ $ 100!" he said with satisfaction.

A. no less than

B. no more than

C. something like

D. only

97. He had difficulty _____ one from the other.

A. not telling

B. telling

C. being told

D. having told

98. He had no idea how difficult the experiment would be _____ halfway through it.

A. before

B. until

C. after

D. unless

99. He had no sooner finished his speech _______ the audience started cheering.

A. as

B. before

C. than

D. when

100. He has never visited the town_______ he was born.

A. where

B. which

C. on which

D. that

101. He is_______of an actor.

A. anybody

B. anyone

C. somebody

D. something

102. He is ______ to speak the truth.

A. too much of a coward

B. too much a coward

C. so much a coward

D. so much a coward

103. ______ he is a learned man, he is ignorant of his manners.

A. Though

B. In spite of

C. For

D. Despite

104. He is an expert on languages, but he knows ______ about natural science.

A. very few

B. a few

C. very little

D. a little

105. He is an honest person. He is ______to do such a dishonest thing.

A. the least man

B. the very man

C. the last man

D. the latest man

106. He is said to _____ two trips to China in the last two years.

A. make

B. be making

C. have been making

D. have made

107. He is the man ______ we all suppose is suitable for such a job.

A. to whom

B. of whom

C. who

D. whom

108. He is very intelligent, but ______ it comes to character, he is not agreeable.

A. when

B. since

C. before

D. after

109. He likes candies with hard centers but she prefers ______ with soft centers.

A. ones

B. the ones

C. that

D. one

110.________ he likes her, he does get irritated with her sometimes.

A. As far as

B. So far

C. Much as

D. In so far as

111. He must have had an accident, or he_______ then.

A. would have been here

B. had to be here

C. should be here

D. would be here

112.______, he never seems able to do the work satisfactorily.

A. Try hard as he will

B. Try as he will hard

C. Try hard will as he

D. Try hard will he as

113. He often sat in a small bar drinking considerably more than ______

A. he was in good health

B. his health was good

C. his good health was

D. was good for his health

114. He orders me about as if I _______his wife.

A. was

B. were

C. would be

D. shall be

115. He said he________English for eighteen years by the time he graduated.

A. would have studied

B. will have studied

C. have studied

D. have been studying

116. ______ he speaks softly is no proof that he is kind.

A. Because

B. When

C. Why

D. That

117. He suggested _______ homeopathic remedies.

A. us to try

B. we tried

C. we shall try

D. we try

118. He took an umbrella with him lest he_____ in the rain.

A. should be caught

B. is caught

C. was caught

D. were caught

119. He was accused_______ several houses.

A. for breaking into

B. with breaking into

C. of breaking into

D. to break into

120. He was dumb-founded at her insistence that he ______ where every cent allowance had gone.

A. explain

B. explained

C. would explain

D. ought to explain

121. He was one of the greatest writers _______had ever lived.

A. who

B. which

C. that

D. as

122. He was punished ______ he should make the same mistake again.

A. unless

B. if

C. for fear that

D. provided

123. He was said to have refused a gift from her, _______that it meant a bribe.

A. knowing

B. having known

C. known

D. being known

124. He was walking in the street _____ he witnessed a traffic accident.

A. when

B. then

C. as

D. while

125. He wishes that she_______ him yesterday.

A. could have called

B. called

C. might have called

D. have called

126. He would have helped us_______ he was short of money at the time.

A. only that

B. unless that

C. but that

D. if it were not that

127. _______ he's already heard the news.

A. Chances are

B. Chance is

C. Opportunities are

D. Opportunity is

128. He' s written a book, ______ I've completely forgotten.

A. which

B. whose

C. the name of which

D. whose name of which

129. ______, Henry washed the cup and put it away.

A. Having drinking the coffee

B. Drinking the coffee

C. Having drunk the coffee

D. After drank the coffee

130. Here is one of the most interesting novels that_____been published______the war.

A. has… after

B. have...after

C. have…since

D. has…since

131. His article is better than_____ in the class.

A. anyone' s else

B. anyone else' s

C. anyone' s else' s

D. anyone else

132. His fear of flying was _____ he always traveled by train or bus.

A. so that

B. such as

C. such that

D. so far as

133. His presence at the meeting was regarded ________ a special meaning.

A. for having

B. as having

C. to have

D. in having

134. How close parents are to their children ______ a strong influence on the character of the children.

A. have

B. has

C. having

D. to have

135. I ______to him because he phoned me shortly afterwards.

A. ought to have written

B. must have written

C. couldn't have written

D. needn't have written

136. _______I admit his good points, I can see his bad ones.

A. As

B. Whether

C. While

D. Now that

137. I agree to most of what you said, but I don' t agree to________ .

A. something

B. nothing

C. everything

D. anything

138. I am not used ______ to like that.

A. to being spoken

B. to speak

C. being spoken

D. to speaking

139. I appreciate ______ to your home.

A. to be invited

B. to have invited

C. being invited

D. having invited

140. I appreciated _____to your birthday party last weekend.

A. to be invited

B. to have been invited

C. having invited

D. having been invited 141. I can speak a little English, but not _______ you.

A. as well as

B. so well than

C. well than

D. so better as

142. I can' t decide whether to go sailing or, because of the bad weather forecast, _______ at home.

A. stay

B. staying

C. to stay

D. whether stay

143. I can' t remember _______ my key when I came home.

A. where did I put

B. where I did put

C. where I put

D. where to put

144. I couldn't find ________ , and so I took this one.

A. coat enough large

B. an enough large coat

C. a large coat enough

D. a large enough coat

145. I don ' t doubt______ the plan will be well-conceived.

A. that

B. why

C. whether

D. when

146. I don' t feel quite myself today and I' Il go to see a doctor to have my blood pressure_______ tomorrow.

A. measure

B. to be measured

C. measured

D. to have measured

147. I don' t think those people are really English. If they were, they _______speak with French accents.

A. don ' t

B. will not

C. mustn't

D. wouldn't

148. I had a lot of trouble _____ my car this morning, so I was late for work.

A. to start

B. to be starting

C. starting

D. to have started

149. I had nearly reached the town, _____ the young man suddenly said, very slowly, "Do

you speak English?"

A. unless

B. until

C. when

D. while

150. I had no ticket for the game, but she gave me_______.

A. her's

B. her

C. hers

D. she's

151. I have _____ interesting books on natural science.

A. much

B. a lot

C. many a great

D. a great many

152. I have to get ____ about the subject before I write the paper.

A. a bit information more

B. a little more information

C. a little information more

D. a few more information

153. I hope her health______ greatly by the time we come back next year.

A. must have improved

B. will have improved

C. would improve

D. has improved

154. I h ope you’ll leave your name and address with us in case you ____ as a witness.

A. will be needed

B. are needed

C. need

D. will need

155. I intended ____ the matter with you, but I had some guests at home then.

A. to have discussed

B. having discussed

C. discuss

D. have discussed

156. I know it is not important, but I can't help _____ about it.

A. think

B. to think

C. thinking

D. to thinking

157. I like watching TV _____ to the cinema.

A. more than to go

B. than going

C. rather than to go

D. more than going

158. I never go past my old school _______I think of Ms. Smith, the headmaster.

A. but

B. that

C. which

D. unless

159. I object _____ as he is still too young.

A. my son to smoke

B. my son smoking

C. to my son to smoke

D. to my son's smoking 160. I regret ______ so much time and money on stamps.

A. to waste

B. for wasting

C. having wasted

D. at wasting

161. _____ I saw you I knew you were angry with me.

A. A moment

B. The moment

C. In a moment

D. For a moment

162. I was ______ about the exam _____ I couldn’t get to sleep.

A. such worried…that

B. worried so... that

C. worried such…that

D. so worried…that

163. I was _________ worried when they didn' t come home.

A. more annoyed as

B. less annoyed as

C. more annoyed than

D. as annoyed more than 164. I was advised _______ for reservations.

A. to either telephone or to write the hotel

B. either to telephone or to write the hotel

C. that I should telephone or either write the hotel

D. I ought either to telephone or write the hotel 165. I will overlook _____ so rude to my sister this time but don' t let it happen again.

A. you to be

B. your being

C. you to have been

D. you having been 166. I wish I _______ to swim when I _____ younger.

A. were taught…had been

B. had been taught…was

C. was taught…was

D. had been taught…had been

167. Only when you have learned a lot of words ____ read efficiently.

A. you will

B. you can

C. can you

D. have you

168. It was the training that he had in university _____ made him such a good employee.

A. that

B. what

C. has

D. who

169. I would help provided that he ______ his part too.

A. did

B. does

C. will do

D. had done

170. I would just as soon you ________ rudely to her.

A. wouldn’t speak

B. won' t sp eak

C. didn't speak

D. haven't spoken 171. I would very much like to have gone to see the movie, but I _____ a ticket.

A. shall not have

B. haven't had

C. don' t have

D. didn’t have 172. I wouldn't read that novel, _____recommends it.

A. no matter who

B. no matter how

C. no matter when

D. no matter what 173. We each ______ our own attitude to bringing up children.

A. have

B. has

C. is

D. are

174. I’d rather than watch television; the programs seem ________ all the time.

A. to get worse

B. to be getting worse

C. to have got worse

D. getting worse 175. I’d rather you ________ make any comment on the issue for the time being.

A. don’t

B. wouldn’t

C. didn’t

D. shouldn’t 176. It is vital that she_______ before it is too late.

A. be warned

B. must be warned

C. is warned

D. can be warned 177. I’ll give my opinion when I _______ the book through.

A. have read

B. will read

C. read

D. shall read 178. ________, I’ll love him all the time.

A. He were rich or poor

B. Be he rich or poor

C. Being rich or poor

D. Were he rich or poor 179. I’ m sure your suggestion will ________ the problem.

A. contribute to solving

B. be contributed to solve

C. contribute to solve

D. be contributed to solving

180. If I ________ you, I would go by plane. Flying is much faster.

A. be

B. was

C. were

D. am

181. Despite the temporary difficulties, the manager prefers increasing the output to _____ it.

A. decreasing

B. decrease

C. decreased

D.being decreased 182. It was stipulated that the goods ________ in three days.

A. should be delivered

B. will be delivered

C. had delivered

D. delivered 183. If it doesn’t rain within the next few weeks, the crops will have to be watered if they are ___ A. to survive B. to be survived C. being survived D. surviving 184. If Martha______ so much work to do, she would have taken her friend out to dinner.

A. should not have

B. had not had

C. would not have

D. would not have had 185. If Mr. Smith comes today, please have him ________ the dirty test tubes.

A. washed

B. washing

C. to washing

D. wash

186. If only the committee _________ the regulations and put them into effect as soon as possible.

A. approve

B. will approve

C. can approve

D. would approve 187. If Paul had received six more votes in the last election, he ________ our chairman now.

A. would be

B. would have been

C. will be

D. must have been 188. If she doesn’t tell him the truth now, he’ll simply keep on asking her until she ________.

A. does

B. has done

C. will do

D. would do 189. If Smith had tried harder to reach the opposite shore, we ________ to pick him up in the boat.

A. wouldn’t have

B. shouldn’t have

C. wouldn’t have had

D. haven’t had

190. If the doctor ________, the child would not have died.

A. was available

B. were available

C. has been available

D. had been available 191. If the work_________ completed by the end of the month is delayed, the construction company will be fined.

A. being

B. to be

C. will be

D. has been 192. If Tom wins tomorrow, he ______ thirty races in the past four years.

A. will win

B. has won

C. would have won

D. will have won 193. If you _______ a moment, I’ll ask the manager to speak to you.

A. waited

B. are waiting

C. will wait

D. have waited 194. If you ________ to attend the banquet, what would you wear?

A. should

B. had

C. would

D. were

195. If you ask for my opinion, I prefer this diagram_________ that one.

A. than

B. more than

C. rather than

D. to

196. If you can’t turn the key, try ________ some oil in the lock

A. put

B. putting

C. to put

D. to putting 197. If either John or Mary ________, I’m not at home.

A. called

B. call

C. calls

D. calling

198. ________ in all parts of state, pines are the most common trees in Georgia.

A. Found

B. Finding them

C. To find them

D. Find them 199. In fact, Mary would rather have left for Beijing______ in Shanghai.

A. to stay

B. than stay

C. than have stayed

D. to have stayed 200. In some countries, ______ is called “equality”does not really mean equal rights for all people.

A. which

B. one

C. that

D. what

201. In spite of all_______ has been said, he won’t listen.

A. which

B. what

C. that

D. as

202. In spite of my poor English, I managed to make myself________.

A. understood

B. understand

C. being understood

D. to be understood

203. In the course of a day students do far more than just _________ classes.

A. attend

B. attended

C. to attend

D. attending

204. ________ in the forest, the boy fell to________.

A. Lost, cry

B. Losing, crying

C. Lost, crying

D. Having been lost, crying

205. In the past men generally preferred that their wives ________ in the home.

A. worked

B. work

C. would work

D. were working

206. In the teaching of mathematics, the way of instruction is generally traditional, with teachers presenting formal lectures and students _________ notes.

A. to take

B. taken

C. taking

D. take

207. In this experiment, they are wakened several times during the night and asked to report what they __________.

A. had just been dreaming

B. have just been dreaming

C. are just dreaming

D. had just dreamt

208. Only in the jungle, where high humidity encourages many diseases, _____to grow.

A. does the potato fail

B. the potato fails

C. fails the potato

D. is the potato failing