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    We believe scientists will a way to solve the problem of air pollution. A. set off B. put off C. come up with D. catch up with 26 for some time after a tiring day is very enjoyable and exciting for me in summer. A Swim B. Swimming C. Go swimming D. To swim 【查看更多】

     

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    We believe scientists will ________a way to solve the problem of air pollution.

       A. set off       B. put off        C. come up with       D. catch up with

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    We believe scientists will ________a way to solve the problem of air pollution.

       A. set off       B. put off        C. come up with       D. catch up with

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    We believe scientists will ________a way to solve the problem of air pollution.

    A．set off

    B．put off

    C．come up with

    D．catch up with

     

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