Problem: M: Yeah, that is a great idea. Maybe Sara would like to come along with us. W: I doubt it. M: Why? You are kidding! You know, she loves watching the sea. W: But yesterday afternoon she told me that she would go home this Saturday. M: What happened? W: She said that her mother was ill and stayed in the hospital, and therefore she wanted to go home to see her. M: I am sorry to hear that. Well, What do you think? Should we take some food? W: That sounds great. Maybe we could have a picnic on the beach. Then let's take some sandwiches, chips, and uh...some salad as well. M: We should also take some drinks like Coke and beer. W: Good. In addition, we had better pack beach towels and sun cream. M: OK. Please don't forget to give me a call and let's go down together. What was said before this conversation?

A: W: What a great day! Hey, Tom, do you want to go to the beach this weekend?
Problem: Given the question: M: I'm glad to, but I'm afraid I won't be free these days. What was said before this conversation?
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The answer is:
F: Will you help me with my English?
input question: M: It was hit by a car yesterday. W: Good God! Were you hurt? M: I'm all right. I was not riding it then. W: Oh, good for you! But what happened? M: I was in a hurry yesterday and I put the bike at the back of a car. W: The driver didn't see it and... M: And the bike was run over by the car. Both its wheels were damaged. They are being repaired now. W: It was lucky that you didn't get hurt. M: Yeah. But it's a pity I can't ride my bike this weekend. W: Oh. Did you have a weekend plan? M: Yeah. I planned to go sightseeing with friends by bike. W: Well, you can use mine if you'd like to. M: Thank you very much. What was said before this conversation????
output answer: W: What's the matter? Your bike is in bad shape.
W: Let me get off there in front of that tree? That's fine. What was said before this conversation?
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Answer: M: This is River Street. What number do you want to go to?
Q: M: I did just buy a car, but it's not exactly a new one-it was made back in the 1950s. Here, take a look at this photo. W: You are right. This car hasn't been new for a long time. Couldn't you afford a newer car? M: Believe it or not, this car costs almost as much as a new one. W: Really? How could it be? M: Well, a lot of cars from the 40s, 50s and 60s have become collectors' items and are worth a lot of money. W: But this one doesn't seem to be in very good shape. M: The engine is still in good condition. I plan to fix up the interior and paint the car myself. Then it will be worth even more money. W: So then you'll resell it? M: No, I don't plan to resell it, but I might enter it in some classical auto shows. Maybe I'll win a prize. What was said before this conversation?
A: W: Jack, I hear you bought a new car.
[Q]: W: Can you see it here? I wanted to make purple, but I didn't use quite enough blue. It turned out just kind of gray and boring. M: Well, I think it turned out great anyway! This is part of the fun of painting - discovering what you can do with a little imagination, taking some risks, and trying to do new things. W: Thanks for the encouragement. M: Sometimes the most beautiful things result from artistic accidents. And I'd say the same is true of almost all interesting things. What was said before this conversation?
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[A]:
W: Mr. Cooper! I tried to make my own colors based on what you taught us in class yesterday. It wasn't easy, though.