1.Minh looks (thin)_____ than he did. 

=>Thinner
2.Mountains are (big)_____than hills.

=>Bigger
3.School days are (happy)_________of my life.

=>Happiest
4.Who is (good)_____,Tom or Tim?

=>Better
5.The air in the city is much (dirty)_________than that in the country.

=>Dirtier
6.The Mekong River is the (long)________river in Vietnam.

=>Longgest
7.My sister is (old)_____than I.

=>Older
8.Nam is (short)__________than Ba. He is the (short)_______in his class.

=>Shorter......... shortest
9.Your house is (large)___________than my house.

=> Larger
10.It is the (modern)___________building in this city.

=>Most modern

1. Minh looks (thin) thinner than he did.

2. Mountains are (big) bigger than hills.

3. School days are (happy) the happiest of my life. i

4. Who is better (good) ,Tom or Tim?

5. The air in the city is much (dirty) dirtier than that in the country.

6. The Mekong River is the (long) longest river in Vietnam.

7. My sister is (old) older than I.

8. Nam is (short) shorter than Ba. He is the (short) shortest in his class.

9. Your house is (large) larger than my house.

10.It is the (modern) most modern building in this city.