◎ 题干
Excuse me, what _____  just now?
[     ]
A. happened
B. to happen
C. is happening
D. did happen
◎ 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“Excuse me, what _____ just now? [ ]A. happenedB. to happen C. is happening D. did happen …”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。