Private cars are required to take turns off roads one out of five weekdays ___the traffic pressure.
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A
relieve
B
relieving
C
torelieve
D
relieve
推荐题目
 I found I could easily make myself _________ by using sign language. 
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A
understood
B
understand
C
to understand
D
being understood
The witnesses________by the police just now gave very different descriptions of the fight. 
#89490
A
questioned
B
being questioned
C
to be questioned
D
having questioned
Having arrived at the railway station, ______.
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A
it was found that the train had left
B
the train had left
C
the train was found left
D
he found that the train had left
With a lot of problems    , the VS troops are having a hard time in Iraq.
#97494
A
settled
B
being settled
C
settling
D
to settle