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    Alison 【查看更多】

     

    题目列表(包括答案和解析)

    Alison has been skating ________ four hours.


    1. A.
      since
    2. B.
      about
    3. C.
      for about
    4. D.
      for since

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    Alison has been sleeping ________ eight o'clock yesterday evening.


    1. A.
      for
    2. B.
      since
    3. C.
      at
    4. D.
      until

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    Alison has been skating for ________ two hours.


    1. A.
      the all
    2. B.
      whole the
    3. C.
      the whole
    4. D.
      all of

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    Alison ________ for the whole five hours.


    1. A.
      skated
    2. B.
      skates
    3. C.
      have been skating
    4. D.
      has been skating

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    Alison has been sleeping ______ eight o'clock yesterday evening.
    [     ]
    A. for
    B. since
    C. at
    D. until

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