Ex 2

1, interesting

2, noisy

3, dusty

4, inconvenient

5, expensive

6, unfriendly

7, ugly

8, narrow

9, big

10, slow

Ex 3

1, wider

2, more expensive

3, worse

4, happier

5, big

6, noisier

7, faster

8, convenient

9, more peaceful

10, polluted

11, more interesting

12, better

13, older

14, easy

15, taller

16, dry

Exercise 4

1, best

2, faster

3, least

4, better

5, prettier

6, happiest

bài 2:

1. fantastic     2. noisy    3. polluted     4. inconvenient     5. expensive     6. unfriendly    7. ugly

8. narrow     9. big    10. slow

Bài 3 

1. wider     2. more expensive    3. worse     4. happier     5. big      6. noisier      7. faster

8. convenient      9. more peaceful    10. polluted     11. more interesting     12. better

13. older    14. easy     15. taller     16. dry