Tom preferred _______TV at home to _______ to the party.
| A．to watch; go | B．watching; going |
| C．watching; go | D．to watch; going |
——Can you tell me why________?
——Because I want to help the people there.
| A．do you go to Tibet（西藏） | B．did you go to Tibet |
| C．are you going to Tibet | D．you are going to Tibet |
They went to the park yesterday, ________?
| A．don't they | B．didn't they |
| C．aren't they | D．can't they |
She________ know the answer, but I'm not sure.
| A．maybe | B．may be | C．may | D．must |
Chinese________ by the largest number of people.
| A．is speaking | B．speak |
| C．speaks | D．is spoken |
Now China has joined WTO（世贸组织）, so I think English is________ useful than before.
| A．more | B．most | C．much | D．many |