根据对话内容，从对话后的选项中选出能填入空白处的最佳选项.选项中有两项多余选项.
（Wang goes to Boston by train. Now he is at the inquiry offices.）
Clerk: May I help you, Sir?
Wang: Yes, I’d like some information about the trains to Boston.
Clerk:____61______
Wang: Tomorrow. I have to be there well before lunch time.
Clerk: There’s a train at 6 a.m.  It’ll get you there at 11a.m. ___62_
Wang: And I have to get up very early too. ______63____
Clerk: Yes, There’s one at 8:30 a.m train. That arrives in Boston at 11:40 a.m.
Wang: I think the 8:30 train will be my best choice. ____64_____
Clerk: Do you want to buy a single fare or round trip ticket?
Wang: What’s the difference?
Clerk: A round trip ticket saves you about 15 percent of the fare.______65____
Wang: A second class.

A．Where do we pay the fare?

B．But there are many stops along the way.

C．What’s the fare?

D．When do you want to go?

E. Do you prefer a first class ticket or a second class?
F. Are there any non-stops to Boston?
G. I’ve got plenty of pocket money.