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    5．He failed the midterm examination and only then how much time he had wasted. A．he realized B．did he realize C．he had realized D．had he realized 解析:选B.本题考查动词的时态和倒装句的用法.根据语法要求only引导状语位于句首时.需要使用倒装句结构.而该状语only then表明了动作发生在过去. 【查看更多】

     

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    He failed the midterm examination and only then ________how much time he had wasted.

    A．he realized

    B．did he realize

    C．he had realized

    D．had he realized

     

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    He failed the midterm examination and only then________how much time he had wasted.

    A. he realized　　　　　　　 B. did he realize

    C. he had realized　　　　　 D. had he realized

     

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     He failed the midterm examination and only then ________how much time he had wasted.

    A. he realized                B. did he realize

    C. he had realized             D. had he realized

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    He failed the midterm examination and only then ________how much time he had wasted.

    A．he realizedB．did he realize
    C．he had realizedD．had he realized

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