Everyone __________go through the security check（安检） when entering the Bird’s Nest stadium.
A. can B. may C. must D. might
I was drawing a horse when Jim __________to my house.
A. comes B. came C. is coming D. was coming
Please __________your mobile phone when you are having a meeting.
A. don’t use B. doesn’t use
C. use D. to use
Now computers are very popular and they are much __________than before.
A. cheap B. cheaper
C. cheapest D. the cheapest
Today my mother asked me __________the rooms with her.
A. clean B. to clean C. cleaing D. cleaned
I think listening is just as __________as speaking in English learning.
A. important B. more important
C. most important D. the most important
