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    To make our city more beautiful, we throw rubbish into the river. A. needn’t B. mustn’t C. must D. may 【查看更多】

     

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    To make our city more beautiful, we must remember that rubbish ________ into the river.

    [　　]

    A．needn't be thrown
    B．mustn't be thrown
    C．can't throw
    D．may not throw

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