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    I am ashamed, sir, that I wasted the many hours I should have studied in class. A. while B. before C. which D. when 【查看更多】

     

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     I am ashamed, sir, that I wasted the many hours __________ I should have studied in class.

    A．while

    B．before

    C．which

    D．when

     

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    I am ashamed, sir, that I wasted the many hours __________ I should have studied in class.


    1. A.
      while
    2. B.
      before
    3. C.
      which
    4. D.
      when

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    I am ashamed, sir, that I wasted the many hours _____ I should have studied in class.

           A. while              B. as                  C. once                     D. when

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    I am ashamed, sir, that I wasted the many hours __________ I should have studied in class.

    A. while                       B. before                        C. which                      D. when

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    I am ashamed, sir, that I wasted the many hours __________ I should have studied in class.

    A．while B．before C．which D．when

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