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    精英家教网 > 高中英语 > 题目详情
    You __________be tired—you’ve only been working for an hour.
    A．must notB．won’tC．can’t　　　　D．may not
    C

    试题分析：考查情态动词。根据you've only been working for an hour,可以推断出前面这句话的意思是：你不可能累的。显然这里也是考查情态动词表示推测的用法，表示“不可能”，应该用can't. may, must表示推测时，只能用在肯定句中。句意：你不可能累的——你就工作了一个小时。故C正确。
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