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    The trouble with such resources as coal, oil and gas that they are not renewable. A. has been B. are C. have been D. is 【查看更多】

     

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    The trouble with such resources as coal, oil and gas ______ that they are not renewable.

    A. was? ????????????? ???????? B. are?? ????????????? ????????????? ?? C. have been? ????????????? ?? D. is

     

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    The trouble with such resources as coal, oil and gas ______ that they are not renewable.

    A. was? ????????????? ???????? B. are?? ????????????? ????????????? ?? C. have been? ????????????? ?? D. is

     

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    The trouble with such resources as coal, oil and gas ______ that they are not renewable.
     A. has been    B. are         C. have been    D. is

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    The trouble with such resources as coal, oil and gas ________ that they are not renewable．


    1. A.
      has been
    2. B.
      are
    3. C.
      have been
    4. D.
      is

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     The trouble with such resources as coal, oil and gas ______ that they are not   

       renewable.

      A. was               B. are                   C. have been     D. is

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