complete the sentences with the new words

1. more difficult

2. much warmer

3. cleverest

4. hottest

5. cheaper

6. much interesting

7. healthier

8. happiest

9. more comfortable

10. most exciting

11. better

12. youngest

13. further

14. quicker, sooner

15. worst

16. louder

17. best

18. most boring

19. worse

20. bad