4
A. It's fine.
B. It's Wednesday.
C. It's October nd.
D. It's the National Day.
5
A. I'm thirteen.
B. I come from China.
C. I come here by bus.
D. It's not far.
6
A. Hold the line, please.
B. Go ahead, please.
C. Yes, you do.
D. Yes, he is in.
7
A. Tonight.
By air.
C. With my friend.
D. On business.