◎ 题干
When the teacher walked into the classroom, the students ____ at once.
A.stopped to talk B.stopped talking
C.stop to talkD.stop to talking
◎ 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“When the teacher walked into the classroom, the students ____ at once.A.stopped to talk B.stopped talking C.stop to talkD.stop to talking…”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。