Bạn tham khảo bên dưới nhé ^^

1. He likes to go to the countryside.

⇒ He enjoys going (to go) to the countryside.

2. The cost of living in the city is more expensive than that in the countryside.

⇒ The cost of living in the countryside is cheaper than that in the city. 

⇒ The cost of living in the countryside is not as expensive as that in the city.

3. That theatre has very comfortable seats. 

⇒ The seat in that theatre are very comfortable.

4. My father will take us to the seaside next summer.

⇒ We will be taken to the seaside next summer.

5. He has a lot of books on his bookshelf.

⇒ There are a lot of books on his bookshelf.

6. It takes him fifteen minutes to go to school.

⇒ He spends fifteen minutes going to school.

7. She gave me a beautiful gift on my birthday.

⇒ I was given a beautiful gift on my birthday.

8. His mother said to him , '' Don't go out when it rains."

⇒ His mother told him not to go out when it rains. 

..........