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OK. Thanks, Mary.You helped me a lot. - ()
科目名称：理工英语3
试卷号：11377
题型：交际用语(单选题)
题目：OK. Thanks, Mary.You helped me a lot. - ()
选项：1. Dont get serious. 2. Youre welcome. 3. Of course not.
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答案：Youre welcome.
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