1 He has just left for work.

2. I have been playing football.

3. He has been studying since 4.00

4. I haven't spoken to him since Monday.

5. I have already cooked dinner.

6. You have seen three films...

7. She has been exercising...

8.Yes, he has been working...

9. Yes, they have lived..

10. No, I haven't finished it yet.

8)

2. Sandra has been painting the picture for a month.

3. Tom has been waiting for his flight for 2 hours.

4. James and Ame has been playing outside for an hour.

5. The Moores have been travelling for four hours.