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    The students took the trouble all the leaves away. A. to clean, fallen B. to clean, falling C. cleaning, falling D. cleaning, fallen 【查看更多】

     

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    The students took the trouble _____ all the ______ leaves away.

        A. to clean, fallen   B. to clean, falling   C. cleaning, falling   D. cleaning, fallen

     

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    The students took the trouble ________ all the _______ leaves away．

    A．to clean, fallen        B．to clean, falling       C．cleaning, falling       D．cleaning, fallen

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