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    Some students from Grade 9 do some for the old. A. volunteered to; clean B. volunteered; cleaning C. volunteered to; cleaning D. volunteered; clean 【查看更多】

     

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    Some students from Grade 9 ____ do some ____ for the old.

     A. volunteered to; clean                                 B. volunteered; cleaning

     C. volunteered to; cleaning                                    D. volunteered; clean

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     Some students from Grade 9 ____ do some ____ for the old.

    A．volunteered to; clean

    B．volunteered; cleaning

    C．volunteered to; cleaning

    D．volunteered; clean

     

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