Students should pay attention to the teacher in class.A. hearB. listen toC. listening toD

问题补充：

Students should pay attention to the teacher in class.

A. hear

B. listen to

C. listening to

D. hearing

答案：

A. hear

B. listen to

(答案→)C. listening to

D. hearing

解析：此题重点考查固定句型结构pay attention to doing sth表示注意某事，其中to是介词后跟动词时一定要用动词的ing形式。听老师讲课常用动词listen to，而hear强调听到的内容。