Ex 1,

1. Your house is bigger than my house/mine.

2. I like to listen to music. 

or I like listening to music.

3. The white dress is less expensive than the black one.

or The white dress is not as expensive as the black one.

4. Mary is the most intelligent (person) in my group.

Ex 2,

1. Her new house is smaller than her old one.

or Her new house is not as big as her old one.

2. Peter is the tallest (one/person/student) in my class.

3. The white dress is less expensive than the black one.

or The white dress is not as expensive as the black one.

4. According to me, Maths is more difficult than English.

or According to me, Maths is not as easy as English.

5. Mary is the most intelligent (person) in my group.

6. The Nile is the longest river in the world 

7. No mountain in the world is higher than Mount Everest

8. She is the prettiest girl I have ever met.

9. The more he works, the more tired he feels.

10. That computer works worse than this one.

or That computer works not as well as this one.

11. The bigger the apartment is, the higher the rent is.

12. The sooner we set off, the sooner we arrive.

13. The better the joke is, the louder the laughter is.

14. The fatter she gets, the more tired she feels.

15. The older he gets, the less travel he wants.

16. The more difficult the games are, the more excited the children are.

17. The faster people drive, the more accidents happen. 

-Cố gắng ngày mai nha bạn ơi! Mình chỉ có thể đưa đáp án thôi, còn lý thuyết áp dụng vô mấy câu trên là dựa vào chuyên đề Các kiểu so sánh trong tiếng Anh nhen-