Resposta:

1. Big - Bigger

2. Small - Smaller

3. Fast - Faster

4. Slow - Slower

5. Tall - Taller

6. Short - Shorter

7. Happy - Happier

8. Sad - Sadder

9. Good - Better

10. Bad - Worse

11. Clever - Cleverer

12. Beautiful - More beautiful

13. Ugly - Uglier

14. Intelligent - More intelligent

15. Brave - Braver

16. Timid - Timider

17. Strong - Stronger

18. Weak - Weaker

19. Rich - Richer

20. Poor - Poorer

21. Old - Older

22. Young - Younger

23. Exciting - More exciting

24. Boring - More boring

25. Delicious - More delicious

26. Expensive - More expensive

27. Cheap - Cheaper

28. Clean - Cleaner

29. Dirty - Dirtier

30. Easy - Easier