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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 【查看更多】

     

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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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    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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