Ответ:

1. Sunny-sunnier-the sunnies

2. Happy-happier-the happiest

3. Hungry-hungrier-the hungriest

4. Messy-messier-the messiest

5. Dirty-dirtier-the dirtiest

6. Hot-hotter-the hottest

7. Fat-fatter-the fattest

8. Clean-cleaner-the cleanest

9. Kind-kinder-the kindest

10. Funny-funnier-the funniest

11. Heavy-heavier-the heaviest

12. Bright-brighter-the brightest