BÀI 1: 

1. wettest                                     

2. hottest

3. largest

4. small

5. height

6. longer

7. higher

8. cheaper

BÀI 2:

1.a) larger

   b) larger

   c) the largest

2.a) more crowded

   b) more crowded

   c) most crowded

BÀI 3:

1. small→smaller→the smallest

2. big→bigger→the biggest

3. large→larger→the largest

4. noisy→nosier→the nosiest

5. thin→thinner→the thinnest

6. good→better→the best

7. fat→fatter→the fattest

8. expensive→more expensive→the most expensive 

9. suitable→more suitable→the most suitable

10. intelligent→more intelligent→the most intelligent

11. clever→cleverer→the cleverest

12. happy→happier→the happiest

13. nice→nicer→the nicest

14. beautiful→more beautiful→ the most beautiful

I.

1. wettest

2. hottest

3. largest

4. smaller

5. highest

6. longer

7. highest

8. cheaper

ii/

1. larger/larger/laregest

2. more crowded/more crowded/most crowded

iii/

1. smaller/smallest

2. bigger/biggest

3. larger/largest

4. noisier/noisiest

5. thinner/thinnest

6. better/best

7. fatter/fattest

8. more expensive/most expensive

9. more suitable/most suitable

10. more intelligent/most intelligent

11. clverer/cleverest

12. more quite/most quite

13. happier/happiest

14. nicer/nicest

15. more beautiful/ most beautiful