根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项。选项中有两个为

多余选项。

Jack: Hi, Frank.

Frank: Hi, Jack.

Jack: 1_____

Frank: Yes, I have some books to read, but I can do it later.

Jack: I want you to do me a favor.

Frank: Go ahead 2_____

Jack: Professor Smith is coming this afternoon, I am expected to meet him at the airport, but I have an

         important meeting to go to.

Frank: I can do it for you. 3_____

Jack: He's about your age, in his early thirties. Tall and handsome.

Frank: 4_____

Jack: Oh, about three o'clock. He is taking flight number 231 from Detroit. Thank you.

Frank: 5_____

A: See you this afternoon

B: How can I recognize him?

C: What do you want me to do?

D: Are you free this afternoon?

E: When should I leave for the airport?

F: I am honored to meet the famous professor.

G: Are you going to the meeting this afternoon?