II/
1. I haven't played tennis since last summer
2. I have known her for more than 10 years
3. I have not eaten anything since lunch time
4. Have you lived in this town for a long time?
5. Jim has been a good friend since we were at school
6. Have you seen Jack at the party since last week?
7. Nam has collected stamp since he was 10
8. Ha has worked here before
9. Have you done this course for 5 years?
10. He hasn't finished his exam yet.
Period 3
I/
1. haven't cleaned up
2. Did you enjoy
3. has just taken
4. have known
5. was
6. have been
7. felt
8. has made
9. has already bought
10. has your team won
11. haven't seen - arrived
12. got - has had
13. lost
14. arrived
15. has broken
