摘要：VI. 单项选择(共20小题,每小题1分.满分20分) 从每小题所给的A.B.C.D四个选项中选出可以填入空白处的最佳选项.31. Mr. Smith needs to send a present to his wife, so he should go to a . A. bookstore B. library C. post office D. museum

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