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    31．Private cars are required to turns off roads one out of five weekdays the traffic pressure. A．to reduce B．reducing C．reduce D．reduced 【查看更多】

     

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    Private cars are required to turns off roads one out of five weekdays        the traffic pressure.

    A．to reduce        B．reducing           C．reduce          D．reduced

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    Private cars are required to turns off roads one out of five weekdays ________ the traffic pressure．

    [　　]

    A．to reduce

    B．reducing

    C．reduce

    D．reduced

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    Private cars are required to take turns off roads one out of five weekdays ____the

          traffic pressure.?

          A.to reduce               B.reducing?

          C.reduce                          D.reduced?

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    Private cars are required to take turns off roads one out of five weekdays ___the traffic pressure.

    A．relieveB．relievingC．torelieveD．relieve

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    Private cars are required to take turns off roads one out of five weekdays ___the traffic pressure.

    A．relieve           B．relieving          C．torelieve          D．relieve

     

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