The teacher encourages us to discussions at the English corner.
| A．pick up | B．take part in | C．give up | D．be proud of |
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 |