◎ 题干
Not until they left school ______ how much their teachers loved them and helped them.

[     ]

A. they realized
B. had they realized
C. they would realize
D. did they realize
◎ 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“Not until they left school ______ how much their teachers loved them and helped them. [ ]A. they realized B. had they realized C. they would realize D. did …”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。