◎ 题干
Mr Smith and Mrs Smith have three _______, a son and two daughters.

A. childs
B. twins
C. brothers
D. children
◎ 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 Smith and Mrs Smith have three _______, a son and two daughters. [ ]A. childs B. twins C. brothers D. children …”主要考查了你对  【可数名词(单数名词,复数名词)】  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。