Problem: M: It's our maths teacher. She always keeps us in class until ten past ten. W: Doesn't she know that you're supposed to get out at ten? M: I guess so. But she never looks at her watch. She just keeps talking. W: Don't the students complain about it? I would say something. M: No. Everybody is too polite. W: Well, you could try and talk to her. M: Maybe. But I'm afraid she might feel hurt. W: Well,it all depends on how and when you say it. If you tell her about it in a friendly way when she's not busy, she might be thankful. She might even ask you to remind her of the time in the future. M: Really? That would be wonderful. Thanks for your advice. What was said before this conversation?

A: M: Oh, hi, Fred! I didn't know whether to save you a place or not. Why are you so late?
Problem: Given the question: M: That wasn't a bad-looking car. I wouldn't mind having one like it. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
W: Did you see the car that girl just drove past in?
input question: M: Yes. the room is fine. W: Are you checking out this morning? M: Yes. I'm leaving around 10:00. What was said before this conversation????
output answer: W: Good morning. did you sleep well last night?
W: Oh, didn't you know? They've doubled the capacity. What was said before this conversation?
----
Answer: M: Let's see now. They can park fifteen cars in that back lot, can't they?
Q: M: No, we'll go to Collin's garage sale; he has many books for sale. W: There're so many books for sale in a flea market near this street, too. Why don't you go there? M: What is a flea market? W: It is not that different from other markets except that the goods there have been used before. M: Are there any good books? W: Of course. If you're lucky, you can find some rare and old ones. M: It sounds like a good place and we should go there. What was said before this conversation?
A: W: Are there any changes in this morning's program?
[Q]: M: Hello, Kate. Where's Jane? I want her to type this letter for me. W: I'm afraid she can't, Tom. She isn't working today. M: Oh, why? Is she ill? W: No. She's studying for an exam. M: An exam. Is she going to school? W: Yes, she is. She's learning Japanese in night school. M: I see. Are you going to night school, too? W: No, I'm not, not this year. But I'm thinking about taking a course next year. M: That's a good idea. Is it expensive? W: No, not very. Anyway, it's worth the money. What was said before this conversation?
****
[A]:
W: [A knock at the door.] Come in, please.