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    A number of students playing on the ground but I don’t know what the exact number . A are; is B are; are C is; is D is; are 【查看更多】

     

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    A number of students_____ playing on the ground but I don't know what the exact number______.

    [       ]

    A. are; is
    B. are; are
    C. is; is
    D. is; are

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    A number of students______ playing on the ground but I don’t know what the exact number ______.

        A is; are            B are; are            C is; is              D. are; is           

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    A number of students ______ playing on the ground but I don’t know what the exact number _______.

    A. are; are　　　 B. is; is　　　　　 C. are; is　　　　　 D. is; are

     

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    A number of students________ playing on the ground but I don’t know what the exact number ______.

    A are; is　　 　　　　 B are; are　　 　　　 C is; is　 　　　　　 D is; are

     

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    A number of students _________ playing on the ground but I don’t know what the exact number _________．

    [　　]

    A．are, is

    B．are, are

    C．is, is

    D．is, are

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