补全对话。 A. Something is wrong with my robot. B. How about tomorrow? C. I'd love to. D. Could you help me? E. speaking. A : Hello. B: Hello. This is Mary. May I speak to John. please? A: 1__________ B: Hi, John. How are you? A: Fine, thanks. And you? B: I'm fine, Thank you. John. I need some help. 2__________ A: Sure. 3__________ B: 4__________ Can you mend it? A: Certainly. But not today. 5__________ B: OK. Thanks a lot. See you then.