Ex1:
1. has been
2. hasn’t had
3. hasn’t played
4. haven’t had
5. haven’t seen
6. have…realized
7. has finished
8. have…known
9. Have you taken
10. Has he eaten
11. have lived
12. has…left; has left/ left
13. have bought
14. has written
15. have finished
Ex2:
1. She hasn't come back home for 4 years.
2. He has worked as a bank clerk for 3 months.
3. We have not flown to Singapore for 5 years.
4. I haven't had my hair cut since November.
5. We haven't called each other for 5 months.
6. We haven't met each other for a long time.
