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    29．Are they still doing the experiment? They're supposed it by the end of last class. A．finish B．finished C．to finish D．to have finished 【查看更多】

     

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    Are they still doing the experiment? They're supposed______it by the end of last class.

    A．finish

    B．finished

    C．to finish

    D．to have finished

     

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    Are they still doing the experiment? They're supposed______it by the end of last class.


    1. A.
      finish
    2. B.
      finished
    3. C.
      to finish
    4. D.
      to have finished

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    Are they still doing the experiment? They're supposed______it by the end of last class.

             A．finish B．finished                         C．to finish                           D．to have finished

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    Are they still doing the experiment? They're supposed______it by the end of last class.

    A．finishB．finishedC．to finishD．to have finished

    查看答案和解析>>


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