1.  It's the first time I have ever eaten octopus!

2. Sandy hasn't seen his sister since she went to university.

3. They have gone on holiday to Spain and won't be back until the end of the month.

4. Poor Tracy! She has been writing that essay for hours now and she still hasn't finished!

5. Have you ever met anyone famous?

6. I have been trying to get in touch with Jenny all morning but I can't find her anywhere.

7. I haven't finished the book yet so I can't tell you what happens.

8. Have you already decided where you're going this summer?

9. We have lived here for the last six years.

10. I have never heard such nonsense!

11. I have been waiting for you since ten o'clock.

12. Watch out! I have just painted the door.

13. I look tired because I have been working really hard today.

14. John has seen Ann twice this week.

15. He has known her for a year.