1. A: Where's Peter?
B: He has just left for work.
2. A: Why are you tired?
B: I have been playing football.
3. A: Is Paul studying in his room?
B: Yes, he has been studying since 4:00.
4. A: How is Jim?
B: I don't know. I haven't spoken to him since Monday.
5. A: Let's go out to eat tonight.
B: How about tomorrow night? I have already cooked dinner.
6. A: I am going to the cinema.
B: Again! You have been going to see three films this week.
7. A: Have you finished the book that I lent you?
B: No, I haven't finished it yet.
8. A: Has Diana lost weight?
B: Yes, she has.
9. A: Does Tom work at MLT Limited?
B: Yes, he has been working at that company for ten years.
10. A: Do John and Andy live in Spain?
B: Yes, they have lived in Spain since 1997.