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    10．He has devoted himself mankind. to benefit B. benefiting C. to benefiting D. benefited 【查看更多】

     

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    He has devoted himself __ mankind.

    1. to benefit       B. benefiting    C. to benefiting    D. benefited

     

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    He has devoted himself __ mankind.
    to benefit       B. benefiting    C. to benefiting    D. benefited

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