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    A teacher also make a mistake if he is not careful enough. A.must B.may C.should D.has to 答案: 2.B 用may表可能性. 【查看更多】

     

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    A teacher 　　　　 also make a mistake if he or she is not careful enough.?

    A.must　　　　 B.may　　　　　　C.should　　　　 D.has to??

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