◎ 题干
Could you tell me     __     ?             
[     ]
A.  when did it happen              
B.  when it happened              
C.  when was it 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“Could you tell me __ ?[ ]A.when did it happenB.when it happenedC.when was it happen…”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。