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    Half an hour has been made full of the problem. A. using; studying B. use; to study C. to use; to study D. use; studying 【查看更多】

     

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    Half an hour has been made full ______ of _____ the problem.

    A. using; studying   B. use; to study   C. to use; to study   D. use; studying

     

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    Half an hour has been made full ______ of _____ the problem.

    A．using; studying

    B．use; to study

    C．to use; to study

    D．use; studying

     

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