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    I b it’s important to sleep eight hours a night. 【查看更多】

     

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    I think it's important for children _____ eight hours a night. 
    [     ]
    A. sleep
    B. sleeps
    C. to sleep
    D. sleeping

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    I believe it’s important ______ eight hours a night．

    A．sleeps            B．sleep             C．sleeping            D．to sleep

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