◎ 题干
—How long _______ you ______ this pen?
—Only one day. I bought it yesterday.

A. have, bought
B. did, buy
C. have, had
D. have, been
◎ 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 _______ you ______ this pen? —Only one day. I bought it yesterday. [ ]A. have, bought B. did, buy C. have, had D. have, been …”主要考查了你对  【现在完成时】  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。