◎ 题干
—When_ ____you___ __the bike?    
—Last month.    
[     ]
A. have; bought    
B. had; bought    
C. do; buy    
D. did; buy
◎ 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“─ When ____ you ____ the bike? ─ Last month. [ ]A. have / bought B. had / bought C. do / buy D. did / buy …”主要考查了你对  【一般过去时】  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。