◎ 题干
While we were running on the playground, Jack suddenly stopped             and lay on the ground, so we all stopped          what was wrong with him.
A. to run; to see   B. running; seeing  C. running; to see
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“While we were running on the playground, Jack suddenly stopped and lay on the ground, so we all stoppedwhat was wrong with him.A. to run; to see B. running;…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词】【动词短语】  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。