从下面选择恰当的句子完成下面的对话，其中有两个多余选项。

Policeman: Stop! The red light is on. 

Li Lei:  I was in a hurry just now. 

Policeman: It's very dangerous to break traffic rules.

Li Lei: I see. I won't do that again.

Policeman: 

Li Lei: Oh, it's already 8 o'clock. I'll be late for an important exam.

Policeman: 

Li Lei: To Xinhua Middle School. 

Policeman: So you'll be on time.

Li Lei: Really? Great! Thank you very much. 

Policeman: 

A. What are you doing?

B. I'm sorry.

C. You're welcome.

D. I can give you a ride. 

E. Where are you going?

F. That's a good idea.

G. It's good that you've realized it.