_________have a try again? I’m sure you can do it.
A. Why not B. How about
C. What about D. Why don’t
I think we all need to help animals live __________.
A. in time B. in danger C. in peace D. in trouble
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
