问题
选择题
Peter couldn't _____ listening to the teacher in class. He didn't pass his exam.[ ]
A. pay attention
B. end up
C. go on
D. concentrate on
答案
答案：D
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Peter couldn't _____ listening to the teacher in class. He didn't pass his exam.[ ]
A. pay attention
B. end up
C. go on
D. concentrate on
答案：D