◎ 题干
.---____ did you leave the classroom? ---____ I saw my daughter sit down and read her book.
A.How long; AfterB.When; UntilC.How long; UntilD.When; After
◎ 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 leave the classroom? ---____ I saw my daughter sit down and read her book. A.How long; AfterB.When; UntilC.How long; UntilD.When; After…”主要考查了你对  【人称代词】【物主代词】【it的用法】  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。