1. He got fat quickly because he ate a lot of junk food.
2.We have started learning about health problems for some week.
(Thì hiện tại hoàn thành
Dấu hiệu nhận biết: for+1 mốc thời gian)
3.I enjoy volunteering because it makes a diffrence in our community.
(Sau enjoy là V-ing hoặc to V)
4.Don't spend much time (for) watching TV.
5.I find mountain climbing interesting.
(Cấu trúc:S+find+something/doing something/adj)
Chúc bạn học tốt!
