The students who are studying in the classroom pay attention to listen to their teacher.

listen →listening

解析：pay attention to中的to是介詞，接動(dòng)詞時(shí)要用動(dòng)詞的-ing形式。

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科目：高中英語 來源： 題型：

On the street I saw a studen _____ I thought was English.

　 A. whom 　 B. who

　 C. the one 　 D. he

 

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