giúp mình với ạ! thanks ạ

1. heavier → heavy

2. best → the best

3. thin → thinner

4. happiest → happier

5. oldest → older

6. sweeter → sweet

7. cheapest → cheaper

8. older → oldest

9. most → more

10. most → the most

11. the earliest → earlier

12. the modern → the most modern

13. colder → coldest

14. the warmest → warmer

15. the fastest → faster

16. more → most