题目内容

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
C
略
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She didn't answer the phone.She ___ be asleep.
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A．can be enjoyingB．must have enjoyed
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A．mayB．mightC．couldD．Must
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A．must be playingB．could be playing
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A．too; wouldn’tB．very; shouldn’tC．that; might notD．so; couldn’t

16. —Who____ it be that is knocking at the door?  
—It ____ be Father, but I’m not sure.  
A．can; mustB．can; mayC．must; canD．may; must

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A．mustB．mayC．shallD．Should

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