阅读下面对话，从方框内7个选项中选择5个恰当的句子完成此对话。

A. I'm a doctor. B. Where are you now? C. This is Scott Smith. D. How will you come? E. What's happening? F. Stay with her and don't move her. G. How long will I have to wait?

A: Hello! This is 911. Who is that speaking?

B:   Help! Help! Please help me!

A: Yes, sir.  

B: My wife is seriously ill. She's having a heart problem.

A: Now relax, sir.   

B: I'm on Lincoln Highway, about 15 miles from Washington Tunnel.

A: OK. I'll send an ambulance (救护车) as soon as possible.

B:  

A: For about ten minutes.

B: All right. What should I do while waiting?

A:  

B: OK. Thank you and please hurry.