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    精英家教网 > 高中英语 > 题目详情

    It’s nearly 7 o’clock. Helen _______ come, but let’s wait for her for another 5 to 7 minutes.
    A．couldn’tB．can’tC．mustn’tD．may not
    D
    考查情态动词。句意“将近7点了。海伦可能不会来了，但是让我们再等她5-7分钟吧。”A“不可能”；B“不可能”；C“禁止”；D“可能不”，语气没有can’t强，根据句意可知，应该表示不太肯定的语气。故选D。
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