input: Please answer the following: W: Hi, Tom. Haven't seen you for ages. Any news? M: I'm going to take a business course when I leave school. W: Are you? Very glad to hear it. Then what are you going to do when you finish? M: Oh, I shall go back to Shanghai to practise there. W: That's a good idea. You know there are more opportunities for business there than in Beijing. And English is very useful in the job. M: Yes, I think it'll be very useful in many ways. W: Besides, Shanghai is an international trade centre. English is used almost everywhere. M: Then I'll be a very promising businessman there. What was said before this conversation?
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output: M: Hi, Lucy.

input: Please answer the following: W: No,not yet. What happened to him? M: I guess he was a little drunk and he had a fight with his brother. Well, he got so mad that he drove his car straight into the front of a drugstore. W: What do you mean? M: I mean he drove inside. The front of the store was completely destroyed. I actually saw it just now as I walked by. The car is still inside the store. W: I'm afraid Fred is in trouble. Where is he now? M: I hear he's in the police station. It's lucky no one was hurt. What was said before this conversation?
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output: M: Did you hear what Fred did last night?

input: Please answer the following: W: Well, to tell the truth I don't car emuch dessert. What was said before this conversation?
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output: M: Would you like to try the banana pie? It's incredible.

input: Please answer the following: M: The Public Library? But there are so many public libraries in London. Which one do you want to go to? W: The nearest one. M: That's rather far away, too. You'd better take a bus. Take the No. 7 bus to the zoo, then change to the No. 9 bus and get off at the end. W: And where's the No. 7 bus-stop, please? M: Go straight down the street, and turn left at the traffic lights. Then take the second turning on the right, and you'll find the bus-stop near the corner. You can't miss it. W: Thank you very much. M: Not at all. What was said before this conversation?
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output:
W: Excuse me. Can you tell me the way to the Public Library?