M: You know, I made sand castles, that sort of things, and hunted for shells. What was said before this conversation?
Ans: W: What did you do on the beach?

M: Seven days later. What was said before this conversation?
Ans: F: When shall I return the book?

W: Yes, well, I bought this tie last week for my husband's birthday, and er...well he doesn't like it. Could I change it for something else, such as a shirt or a hat? M: Certainly, madam, provided that it hasn't been worn, and if you have the receipt. W: Yes, here it is. M: OK, er... this tie looks as if it were worn. I'm afraid I can't put that back on the shelf. W: Oh, that's a pity. What was said before this conversation?
Ans: M: Can I help you?

W: Oh, sorry, I missed you. My English class ran late again. M: That's been happening quite often recently. Maybe it's because the final exams are coming up. W: Yes. After class, there is always a group of students hanging around the professor asking questions. How about you? Are yon ready for the exams? M: I've been studying a lot recently, but my math problems are really giving me a big headache. W: Don't worry, Tom. There's still one month to go before the exam. You have enough time to work them out. M: Well, I don't need to spend much time on other subjects. I can pay more attention to my weak subjects. What was said before this conversation?
Ans: M: Hi, Lily. Where were you at lunchtime? I was looking for you in the dining hall.