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    Half of the students done most of the work. The rest of the work rather difficult. A. have; is B. has; are C. have; are D. has; is 【查看更多】

     

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    Half of the students               done most of the work. The rest of the work              rather difficult.
    [     ]
    A. have ; is
    B. has ; are
    C. have ; are
    D. has ; is

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