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    科目： 来源： 题型：单选题

    It was a long time _________ the miners in Chile were rescued from under the mine．


    1. A.
      until
    2. B.
      when
    3. C.
      before
    4. D.
      since

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    科目： 来源： 题型：单选题

    The costs of distribution and sales make up a large part of the prices that ________.


    1. A.
      are paid for all products
    2. B.
      all products are paid for
    3. C.
      for which all products are paid
    4. D.
      for all products paid

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    科目： 来源： 题型：单选题

    Can you get the chock ________ again?


    1. A.
      go
    2. B.
      going
    3. C.
      being gone
    4. D.
      gone

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    科目： 来源： 题型：单选题

    The big tower ________ in the Tang Dynasty broke down last week．


    1. A.
      built
    2. B.
      being building
    3. C.
      being built
    4. D.
      to build

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    科目： 来源： 题型：单选题

    Never ________ on a plane before，the old woman felt very sick．


    1. A.
      be
    2. B.
      to be
    3. C.
      being
    4. D.
      having been

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    科目： 来源： 题型：单选题

    The microscope is rather difficult ________．


    1. A.
      to repair
    2. B.
      to be repaired
    3. C.
      repairing
    4. D.
      being repaired

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    科目： 来源： 题型：单选题

    I am sorry to ________ you waiting outside so long．


    1. A.
      keep
    2. B.
      be keeping
    3. C.
      have kept
    4. D.
      to be kept

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    科目： 来源： 题型：单选题

    After saying goodbye, the couple moved off and ________ in the crowd.


    1. A.
      was lost
    2. B.
      were lost
    3. C.
      had lost
    4. D.
      lost

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    科目： 来源： 题型：单选题

    I have a lot of difficulties ________．


    1. A.
      overcome
    2. B.
      to overcome
    3. C.
      overcoming
    4. D.
      to be overcome

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    科目： 来源： 题型：单选题

    They have no difficulty ________ their work．


    1. A.
      to finish
    2. B.
      finished
    3. C.
      in finishing
    4. D.
      for finishing

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