◎ 题干
To make us healthier, the teachers often see us ______ on the playground.
A.took exerciseB.take exercise
C.take exercisingD.to take exercise
◎ 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“To make us healthier, the teachers often see us ______ on the playground. A.took exerciseB.take exerciseC.take exercisingD.to take exercise…”主要考查了你对  【不定式】【分词】【动名词】  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。