◎ 题干
— How long are you staying? 
— I don't know. _____.

A. That's OK
B. Never mind
C. It doesn't matter
D. It depends
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—How long are you staying?— I don't know. _____. [ ]A. That's OK B. Never mind C. It doesn't matter D. It depends …”主要考查了你对  【日常用语、谚语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。