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    精英家教网 > 高中英语 > 题目详情
    My brother is honest. He _____ such a thing.
    A．might not doB．can’t have doneC．can doD．mustn’t have done
    B
    考查情态代词用法。有把握的肯定推测用must,有把握的否定推测用can’t.根据句意可知是对过去发生的事情进行推测。结合句意可知是否定。句意：我的兄弟很诚实。他不可能做了这样的事情。
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