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    Some aspeets of a pilot’s job be boring,and prilots often work at inconvenient hours. ;have to B.may;can C.have to;may D.ought to;must 【查看更多】

     

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    Some aspeets of a pilot’s job__________be boring,and prilots often____________work at inconvenient hours.

    A.can;have to        B.may;can       C.have to;may        D.ought to;must

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