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He _______ have taken your car by mistake because he didn’t have the keys.
A.mustn’tB.shouldn’tC.couldn’tD.needn’t
C

试题分析:句意:他不应该开错车因为他没有钥匙。mustn’t禁止;shouldn’t不应该;couldn’t不可能;needn’t不必。根据句意故选C。
点评:本题难度适中。情态动词是高中阶段的重难点之一,需要考生熟记它们的用法,在各类考试中经常出现,这里主要考查四个情态动词的区别,考生容易误选C。
即学即练: —I regret to say that I __________ have shouted at you the other day.
—Forget it. I was   bit out of control myself. A.shouldn’t       B.mustn’t      C.couldn’t        D.mightn’t
解析:A。根据句意,向对方道歉,应该是“我本不应该……”,故选A。
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