题目内容
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
A
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题目内容
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
A