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    35．Tony full marks, but he was so careless as to make a spelling mistake. A．must have gained B．can have gained C．could have gained D．must gain 【查看更多】

     

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    Tony ________ full marks, but he was so careless as to make a spelling mistake.

    A. could have gained?????????????????? B. can have gained

    C. must have gained??????????????????? D. must gain

     

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