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    By the time he realized he all his precious years, it was too late. A. had wasted B. wasted C. was wasting D. has wasted 【查看更多】

     

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    By the time he realized he ________ all his precious years, it was too late．


    1. A.
      had wasted
    2. B.
      wasted
    3. C.
      was wasting
    4. D.
      has wasted

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    By the time he realized he ________ all his precious years, it was too late．

    [　　]
    A．

    had wasted

    B．

    wasted

    C．

    was wasting

    D．

    has wasted

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