根据n多题专家分析，试题“Tom is an American boy._____ mother is a doctor. [ ]A. Her B. He'sC. His D. Him…”主要考查了你对 【物主代词】 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。
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