They are broadening the bridge to ________ the flow of traffic.(2011·山东)
#63919
A
put off
B
speed up
C
turn on
D
work out
推荐题目
As a young man, Zhou Enlai ____ the students movements and later ____ the Communist Party of China. 
#66556
A
joined; took part in
B
took part in; joined
C
joined in; took part in
D
took part in; joined in
I overslept this morning because my alarm clock ______.
#69183
A
didn’t go out
B
didn’t let out
C
didn’t go off
D
didn’t let off