5. long- longer-the longest

6. heavy-heavier-the heaviest

7. hot-hotter-the hottest

8. cheap-cheaper- thecheapest

9. important- more important- the most important

10. modern- more modern- the most modern

11. lazy- lazier-the laziest

12. far- father-the fathest

           - further- the furthest

13. new- newer- the newest

14. young- younger-the youngest

15. fast-faster- the fastest

16. beautiful- more beautiful- the most beautiful

17. comfortable - more comfortable- the most comfortable

18. expensive- more expensive- the most expensive

19. good- better- the best

20. bad- worse-the worst

CHÚC BẠN HỌC TỐT!!!!

$5.$ long - longer - the longest

$6.$ heavy - heavier - the heaviest

$7.$ hot - hotter - the hottest

$8.$ cheap - cheaper - the cheapest

$9.$ important - more important - the most important

$10.$ modern  - more modern - the most modern

$11.$ lazy - lazier - the laziest

$12.$ far - father - the fathest

$13.$ new - newer - the newest

$14.$ young - younger - the youngest

$15.$ fast - faster - the fastest

$16.$ beautiful - more beautiful - the most beautiful

$17.$ comfortable - more comfortable - the most comfortable

$18.$ expensive - more expensive - the most expensive

$19.$ good - better - the best

$20.$ bad - worse - worst

$mien$