◎ 题干
The pair of trousers _______ them 30 dollars.
A. costs
B. takes
C. costed
D. took
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The pair of trousers _______ them 30 dollars. [ ]A. costs B. takes C. costed D. took …”主要考查了你对  【实义动词的单数第三人称形式】【一般现在时】  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。