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    My mother is busy the room. A. clean B. to clean C. cleaning D. cleans 【查看更多】

     

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    My mother is busy _____ the room.

    [     ]

    A. clean
    B. to clean
    C. cleaning
    D. cleans

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    My mother is busy________the room.
    [     ]
    A. clean
    B. to clean
    C. cleaning
    D. cleans

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     My mother is busy________the room.

    A. clean                    B. to clean                    C. cleaning                   D. cleans

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    My mother is busy_____ the room.

    A．clean             B．to clean           C．cleaning          D．cleans

     

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