Ex. 13
1. Where
2. How
3. When
4. Who
5. What
6. Which
7. What
ex. 14
1. She
2. old
3. is
4. His
5. on
6. has
7. name
8. from
9. of
10. years
11. We
12. player
13. colour
14. White
15. Russia
16. a
17. of
18. hair
19. is
20. the
21. the
ex. 15
1. c
2. b
3. c
4. a
5. c
6. a
7. b
8. b