◎ 题干
— ___________ that boy?
— He's my brother.
[     ]
A. Who
B. Who's
C. Who are
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— ___________ that boy?— He's my brother.[ ]A. Who B. Who's C. Who are…”主要考查了你对  【疑问代词】【系动词】  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。