题目内容

I _______ have met him a long time ago. Both his name and face are very familiar.
A．mayB．can
C．wouldD．should
A
may have done sth 表示对过去可能发生的事进行推测，意为“可能曾经”。
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If human beings had been a bit less greedy and cruel, more birds and animals _____dying out.
A．ought to avoidB．could have been avoided
C．should have avoidedD．might have avoided
.—You ____ have set aside more time to play with our kids.
—I wish I ______, but you know how busy I was.
A．should, wouldB．could, didC．might, shouldD．should, had
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—_____, but I can’t do without it.                
A．No, I shouldB．Yes, I shouldn’t
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A．might fall outB．could fall out
C．should have fallen outD．must have fallen out
How I wish it____! If it ___in a couple of days, the crops would survive.  
A．will rain; rainedB．would rain; should rain
C．should rain; rainsD．would rain; had rained
. The biggest problem for most plants, which ___ just get up and run away when threatened, is that animals like to eat them.
A．shan’tB．can’t
C．needn’tD．mustn’t
— We want someone to design the new art museum for us.
　　　　— ________ the young fellow have a try?
A．MayB．Shall
C．WillD．Need
The police still haven’t found her, but they’re doing all they _____.
A．mayB．can
C．mustD．will

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