练习册

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    He hasn't heard from his friend last month. A. since B. by the end of C. for D. until A.易错选B或D.not-until.和last month应与过去的某种时态.而不是现在的某种时态连用. 【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

    查看答案和解析>>

    He hasn't heard from his friend ________ last month.

    A. since

    B. by the end of

    C. for

    D. until

    查看答案和解析>>


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