上海开放大学机电大学英语网上作业一

?A)

Is

?B)

Are

?C)

Am

?A)

leaf

?B)

leafs

?C)

leaves

参考答案：C

收起解析

解析：

无

3(10分)

?A)

twelve……The twelfth ?B)

twelfth……Twelve

?C)

the twelve……Twelfth

?A)

rains

?B)

raining

?C)

is raining

?A)

do you come

?B)

are you coming

?C)

you are coming

?A)

five ten-dollar bills ?B)

five ten-dollars bill ?C)

five ten dollars bills

?A)

spends

?B)

costs

?C)

pays

?A)

What about

?B)

How about

?C)

Why don’t you

?A)

is she flying

?B)

she flies

?C)

she is going to fly

参考答案：A

收起解析

解析：

?A)

with

?B)

by

?C)

on 参考答案：B

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? C)

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