Ex 2.

1.the longest

2.the most interesting

3.the biggest

4.the best

5.the most beautiful

6.the coldest

7.the fastest

8.the most important

Ex 3.

1.better than

2.the most clever 

3.more expensive than

4.the most beautiful

5.cheaper than

6.more interesting than

7.the most suitable

8.the highest

9.older 

10.the biggest

11.more expensive 

12.better

13.more beautiful

14.the best

15.narrower/cleaner

16.smallest

#goodluck

Bài 2

1,the longest 

2,the most interesting 

3,the biggest 

4,the best 

5,the most beautiful 

6,the coldest

7,the fastest

8,the most important

Bài 3

1,better than 

2,the most clever

3,more expensive 

4,the most beautiful

5,cheaper

6,more interesting 

7,the most suitable

8,the highest

9,older 

10,the biggest 

11,more expensive 

12,better

13,more beautiful 

14,the best 

15,narrower / cleaner 

16,smallest 

#good_luck