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    Ladies and gentlemen, please fasten your seat belts. The plane . A. takes off B. took off C. has taken off D. is taking off 【查看更多】

     

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    Ladies and gentlemen, please fasten your seat belts. The plane _____.
    [     ]
    A. takes off
    B. took off
    C. has taken off
    D. is taking off

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    Ladies and gentlemen, please fasten your seat belts. The plane _______.

    A. takes off    B. is taking off    

    C. has taken off      D. took off

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    Ladies and gentlemen,please fasten your seat belts.The plane______.

    A.takes off                          B.is taking off

    C.has taken off                     D.took off

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    Ladies and gentlemen, please fasten your seat belts. The plane  ________.

    A. takes off       B. is taking off     C. has taken off   D. took off

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     Ladies and gentlemen, please fasten your seat belts. The plane  ________.

      A. takes off       B. is taking off     C. has taken off   D. took off

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