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    ------The windows must have taken you quite a long time that day. ------ Right. They for weeks. A. haven’t been cleaned B. didn’t clean C. hadn’t been cleaned D. haven’t cleaned 【查看更多】

     

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    -----The windows must have taken you quite a long time that day.

    ------Right. They         for weeks.

    A．haven’t been cleaned

    B．hadn’t been cleaned

    C．didn’t clean

    D．haven’t cleaned

     

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    ——The windows must have taken you quite a long time that day.

    ——Right. They _______for weeks.

    A. haven’t been cleaned                 B. hadn’t been cleaned

    C. didn’t clean                        D. haven’t cleaned

     

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    -----The windows must have taken you quite a long time that day.

      ------Right. They          for weeks.

    A. haven’t been cleaned  B. hadn’t been cleaned  C. didn’t clean    D. haven’t cleaned

     

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    ----- The windows must have taken you quite a long time that day.
    ----- Right. They ______ for months


    1. A.
      haven’t been cleaned
    2. B.
      didn’t clean
    3. C.
      hadn’t been cleaned
    4. D.
      haven’t cleaned

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    — The windows must have taken you quite a long time that day.  
    — Right. They ____ for weeks.  
    [     ]
    A. haven't been cleaned                
    B. hadn't been cleaned  
    C. didn't clean                        
    D. haven't cleaned

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