◎ 题干
Do you know _____?

[     ]

A. how old is Jack
B. how old Jack is
C. when was Jack born
D. when Jack is born
◎ 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“Do you know _____? [ ]A. how old is Jack B. how old Jack is C. when was Jack born D. when Jack is born …”主要考查了你对  【一般过去时】【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。