1 Vinh really enjoys hanging out with his friends 

-> enjoys + V-ing 

2 It is very interesting to play beach games.

-> vật + ADJ + V-ing 

3 it is better to avoid spending too much time on computer games.

-> avoid :  tránh 

-> avoid + V-ing 

4 My parents want me to learn something interesting.

5 Jenny dislikes reading poetry.

-> dislike + V -ing

6 Tokyo has fewer billionaires than New York.

-> so sánh hơn 

7  Did a group of foreigners visit the slums last week?

-> thì QKĐ 

-> did + s + v nguyên mẫu 

8 The countryside is less suffer pulluation than the city

-> so sánh hơn 

-> little -> less

9 Overpopulation causes a lot of social problems in this area. doesn't it ?

-> tag question thì HTĐ 

-> vế trước khẳng định phần đuôi phủ định 

10 Shanghai has more skyscrapers than Jakartar

-> so sánh hơn