◎ 题干
Did you know    __    over there?        
[     ]
A. what did happen    
B. what happened    
C. what is happening
◎ 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“Did you know __ over there? [ ]A. what did happenB. what happenedC. what is happening…”主要考查了你对  【宾语从句】  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。