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—IwonderifIsmokehere.—Noyou.Youseethereisa“NOSMOKING”signhere.A.may;needn'tB.must;can'tC.shall;won't

题目详情

—I wonder if I  ________  smoke here.

—No you        ________. You see there is a“NO SMOKING”sign here.

A.may; needn't      B.must; can't     

C.shall; won't      D.can; mustn't

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D