◎ 题干
Only when he left home ______ how much he loves his parents.

[     ]

A. did he know
B. had he know
C. he knew
D. he had knew
◎ 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“Only when he left home ______ how much he loves his parents. [ ]A. did he know B. had he know C. he knew D. he had knew …”主要考查了你对  【一般过去时】【部分倒装】  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。