◎ 题干
Mr Green didn’t know ______ last night.
A.when does his son come backB.when his son comes back
C.when his son come homeD.when his son came home
◎ 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“Mr Green didn’t know ______ last night.A.when does his son come backB.when his son comes backC.when his son come homeD.when his son came home…”主要考查了你对  【定语从句】  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。