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    29． Every possible means , but the teacher as well as the students found a solution to the problem yet. A. has been tried; hasn’t B. has tried; haven’t C. have tried; haven’t D. have been tried; hasn’t 【查看更多】

     

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    Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet.

    A. has been tried; hasn’t                B. has tried; haven’t

    C. have tried; haven’t  D. have been tried; hasn’t

     

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    Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet


    1. A.
      has been tried; hasn’t
    2. B.
      has tried; haven’t
    3. C.
      have tried; haven’t
    4. D.
      have been tried; hasn’t

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    Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet.

    A．has been tried; hasn’tB．has tried; haven’t
    C．have tried; haven’tD．have been tried; hasn’t

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    Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet．

    [　　]
    A．

    has tried; haven’t

    B．

    has been tried; hasn’t

    C．

    have tried; haven’t

    D．

    have been tried; hasn’t

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