The little girl ,but her family was too poor at that time.A．could go to schoolB．could have gone to schoolC．must have gone to school D．can have gone to school 题目和参考答案——青夏教育精英家教网—

题目内容

The little girl ,but her family was too poor at that time.

A．could go to school

B．could have gone to school

C．must have gone to school　

D．can have gone to school

对过去事情表示猜测，应用情态动词的完成式。could have done表示“本有可能，但却没有”。

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A．can	B．should
C．might	D．need

Thank you for giving me a hand. I ______ in the experiment without your valuable help.

It is usually not quite cold in this area in March, but sometimes temperature __________be very low.

--- you disturb her with these annoying questions just when she was busy cooking dinner?
---Sorry, I that at that time.

A．Should, should have done	B．Shall; may have done
C．Must, should do	D．Must, should not have done

——Are you content with her lecture?
——Nowhere near that. It ____.

A．may have been good

B．couldn’t have been worse

C．can’t be better

D．must be better

I must go there earlier. John has suggested that I _____ an hour before the discussion begins.

. If only I ________ how to operate an electronic computer as you do.

A．had known	B．would know
C．should know	D．knew

It is usually not quite cold in this area in March, but sometimes temperature ____be very low.

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