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    We must keep our classroom c . 【查看更多】

     

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    We must keep our classroom______.

    A. cleaning         B. clean            C. to clean

     

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    We must keep our classroom______.
    A. cleaning         B. clean            C. to clean

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    We must keep our classroom______.
    A. cleaning         B. clean            C. to clean

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    We must keep our classroom ________．

    [　　]

    A．cleaner and tidy

    B．clean and tidy

    C．clean and tidier

    D．cleaner and tidier

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    We must keep our classroom ________．

    [　　]
    A．

    cleaning

    B．

    clean

    C．

    to clean

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