Exercise 1
1. that
2. whoever
3. was
4. whether
5. what
6. That
7. what
8. What
9. what
10. that
11. whether
12. that
13. what
14. that
15. What
16. what
17. whether
18. that
19. where
20. Whoever
Exercise 2
1. What
2. who
3. that
4. that
5. what
6. what
7. that
8. what
9. that
10. That
11. What
12. What
13. that
14. what
15. that
16. whether
17. how
18. that
19. which
20. that