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―Do you know where David is? I couldn’t find him anywhere.
―Well. He ______ have gone far — his coat’s still here.
A.needn’tB.can’tC.mustn’tD.wouldn’t
B

试题分析:考查表示推测的情态动词用法:句意:--你知道戴维在哪里?我到处都找不到他。---喔,他不可能走远--他大衣还在这儿呢。表示否定推测用can’t have done,过去不可能做了…,needn't have done sth. 表示“本不必做某事”(实际上做了),mustn't 表示“禁止”,不能用于推测句。wouldn't have done sth. 用于虚拟语气,表示“如果。。的话,就不会做了某件事情),选B
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