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    It Jack twenty minutes the math problem yesterday． A． took, to work out B．takes, to work out C．has taken, working out D．is taking, working out 【查看更多】

     

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    It ________ Jack twenty minutes ________ the math problem yesterday．


    1. A.
      took; to work out
    2. B.
      takes; to work out
    3. C.
      has taken; working out
    4. D.
      is taking; working out

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