摘要：( ) Mary and Joy are Class One. They are the U.S.A. A. from; in B. in; from C. to; from D. in; to 分析:B 本题考查介词的用法.in指在--里, 用--; from指来自; to指到.对.向.由此题中的Class One和the U.S.A. 可知选B.

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