Dr Brown has the habit of _____ the room when  he is thinking about something troublesome. 
#81845
A
pacing
B
stepping
C
walking
D
marching
推荐题目
As we know, the rose _____________ England.
#76171
A
represent
B
represents
C
express
D
suggest
Few plants will ________ sudden changes in temperature.
#72104
A
defend
B
smooth
C
tolerate
D
oppose