1. work - worker (A)
2. leader - leadership (F)
3. dictate - dictation (B)
4. develop - development (C)
5. child - childhood (D)
6. kind - kindness (E)
7. help - helper (A)
8. communicate - communication (B)
9. collect - collection (B)
10. think - thinker (A)
11. brother - brotherhood (D)
12. govern - government (C)
13. dark - darkness (E)
14. neighbour - neighborhood (D)
15. arm - armament (C)
16. friend - friendship (F)
17. happy - happiness (E)
18. write - writer (A)
19. translate - translation (B)
20. speak - speaker (A)
21. citizen - citizenship (F)
22. design - designer (A)
23. move - movement (C)
24. protect - protection (B)
25. improve - improvement (C)