Exercise 1
1. teaching
2. building
3. Having suffered
4. completed
5. kept
6. invited
7. seated
8. exhausted
9. seized, disappearing
10. wearing
11. staged
12. mixed
13. waiting
14. chased
15. displayed
16. spoken
17. coming
18. flying
19. Trapped
20. Influenced
21. requiring
22. leaving
23. looking
24. is regarded
25. married
Exercise 2
1. hoping
2. Founded
3. playing
4. Not having found
5. indicating, interrupting
6. lacking
7. known
8. interesting
9. taken
10. smelling
11. recorded
12. Put
13. taking
14. earning
15. Mailed
16. calling
17. completed
18. trying
19. located
20. killing
21. affected
22. amused
23. Approaching
24. saved
25. realizing