题目内容

–Why, I couldn’t get you on the phone this morning.
--We _____ tennis in the yard when you called.
A．must be playingB．could be playing
C．must have playedD．must have been playing
D
略
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---Someone’s been here. Who ___ it be? It looks like Helen.
---It ___ be Helen.She is ill in hospital.
A．must; mustB．might; couldC．can; mustn’tD．can; can’t

38. Mr. Black ______ home because his briefcase is still on the desk.
A．mustn’t have goneB．can’t have gone
C．shouldn’t have goneD．needn’t have gone

33. There was no light in the dormitory last night. So, they ________ to the lecture then.
A．must have goneB．should have gone
C．needn’t have goneD．couldn’t have gone
You _____ the flowers more water so that they can grow well now.
A．would have givenB．might have given
C．must have givenD．should have given
It has been announced that candidates _____ remain in their seats until all the papers have been collected.
A．canB．willC．mayD．shall
You ____ if you had spoken the truth out. But you were as quiet as a mouse.
A．mustn’t have been blamedB．shouldn’t be blamed
C．wouldn’t have been blamedD．couldn’t be blamed

32．How_________I help them to understand when they won’t listen to me?
A．canB．wouldC．mayD．Must
If you had finished your homework yesterday, you _____ home now.
A．will goB．would goC．would have goneD．go

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