从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。（共5题；每小题2，满分10分）
A: Excuse me. Where can I get the 8:30 flight to Chicago?
B:  __1 but the 8:30 flight to Chicago has just left.
A:  Oh, no! __ 2_
B : I'm afraid so.
A: I don't believe it. I’ve got to spend the weekend with my wife. When is the next flight to Chicago?
B: _3 It is at 9:45.
A: Not until 9:45? _4
B: Yes. I' m certain. Would you like to get a ticket?
A: _5  Please tell me when that flight arrives.
B :At 11:15 .Will that flight get you to Chicago in time for your weekend?
A: I hope so.

A．Let me see.

B．That' s all right.

C．I'm sorry

D．I guess so.

E．I missed the flight?
F．What can I do for you?
G．Are you sure of it?