◎ 题干
--Mary's gone out with ________ his name--you know, the boy with the red car?
-- Oh, it's Jack.
A.that'sB.it'sC.what'sD.who's
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“--Mary's gone out with ________ his name--you know, the boy with the red car? -- Oh, it's Jack.A.that'sB.it'sC.what'sD.who's…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  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。