1. I have known Ann _____ 1995.

2. Kate has been studying psychology _____ 2 years.

3. My brother has lived in Boston _____ 10 years.

4. They have been playing football _____ an hour.

5. We haven't talked _____ we left school.

6. David has been my teacher _____ a year.

7. Kate and John have been married _____ 20 years.

8. I have been waiting for the bus _____ noon.

9. We haven't talked _____ we left the shop.

10. We have been meeting _____ a long time.

11.  Michael has been working for this company _____ five months.

12. They have been best friends _____ over 5 years.

13. I have been playing violin _____ I was a child.

14. I've been waiting for you _____ 5 o’clock.

15. I have been trying to reach you _____ our last meeting.