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    29．Even the top students in our class work out the maths problem , so it be difficult． A．can ' t, must B．can ' t, need C．can, may D．mustn't, can 【查看更多】

     

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    Even the top students in our class        work out the maths problem , so it        be difficult．

    A．can ' t, must      B．can ' t, need                  C．can, may                D．mustn't, can

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