-Who is the girl standing over there? -Well, if you know, her name is Mabel. A.m
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—Who is the girl standing over there?
—Well, if you _____________ know, hername is Mabel.
A.may B.can
C.must D.shall
试题答案
答案:C
解析:该题考查情态动词must的用法。must可以用来表示与说话人愿望相反及不耐烦地情况,意思是“偏要”。
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