根据下面对话的意思，选择合适的选项补全对话，将序号写在横线上。
Jack: Hello!
Hans: Hello. This is Hans. May I speak to Jack, please?
Jack: 1___________.
Hans: Hi, Jack. How are you?
Jack: Fine, thanks. How are you?
Hans: I'm fine. Thank you. Jack, 2___________
Jack: Sure. 3___________.
Hans: There is something wrong with my computer. Can you repair it?
Jack: Certainly, but not today. 4___________.
Hans: OK. Thanks a lot. 5___________.
A. See you then.
B. What is it?
C. How about Sunday afternoon?
D. Can you help me?
E. Speaking.
