Dr Brown has the habit of the room when he is thinking about something troublesome. A. pa

发布时间：2020-08-14 23:29:03

Dr Brown has the habit of      the room when  he is thinking about something troublesome.
A. pacing
B. stepping
C. walking
D. marching

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(答案→)A. pacing
B. stepping
C. walking
D. marching
解析：pace the room是个固定搭配。在屋子里来回镀步
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