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    He hasn’t heard from his friend last month. A. sinceB. by the end ofC. forD. until 答案: A (选择B的同学要注意B选项为过去完成时的时间;选择C的同学要注意, for+时间段; 选择D的同学要注意不是not-until 句型.until + 句子) 【查看更多】

     

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    He hasn't heard from his friend ______ last month.
    [     ]
    A. since
    B. by the end of
    C. for
    D. until

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