Ex5:

1.HCM city is the biggest city in VN.

2.Nguyen Du is the most popular writer in VN.

3.Spring rolls is the most popular food.

4.Ha is the most intelligent people in my class.

5.My room is the most comfortable room in my house.

6.This building is the tallest building in this neighborhood.

7.My school is the smallest school in my town.

8.My school bag is the most beautiful bag in my class.

9.Phansipang is the highest mountain in VN.

10.Hai is the best student in his class.

Chúc bạn học tốt ^_^!!!
(Nếu thấy hay hãy vote 5*,cảm ơn và bình chọn là câu trả lời hay nhất để mik có động lực giải tiếp các BT khác nhé!) 

1. Ho Chi Minh City is the biggest city in Viet Nam.

2. Nguyen Du is the most popular write in Viet Nam.

3. Spring rolls is the most popular food.

4. Ha is the most intelligent in her class.

5. My room is the most comfortable in my house.

6. The building is the tallest in this neighbourhood.

7. My school is the smallest in my town.

8. My school bag is the most beautiful in my class.

9. Phanxipang is the highest mountain in Viet Nam.

10. Hai is the best student in his class.

CHÚC BẠN HỌC TỐT!!!~.~