Don’t listen music in the classroom hallways. A. to; and B. to; or C. at; or
What are they__________ the police in the meeting room?
It’s cold outside today, You’d better___________your coat.
---Don’t play on the road. It’s dangerous.---_______________________________.
---When did they__________Beijing?---They ___________there at 5:00p.m.
I have ________money than you, but I have _________friends than you.