Adjectives and adverbs - Complete the list of adverbs

1. easy: easily
2. slow
3. good
4. happy
5. hard
6. quick
7. quiet
8. rude
9. fast
10. careful
11. angry
12. bad
13. dangerous
14. sad
15. polite
16. proper
17. early
18. comfortable
19. late
20. recent