5.As you look at the pages of a stamp album , you can learn  interesting details about foreign customs , arts , literature , history and culture

6. their colors can make you feel ralaxed and happy

7. Collecting stamp can become a business

8. If  you are lucky in finding special stamps , it will bring you some money besides knowledge and pleasure 

 chức bạn học tốt nhé !!

`5. ⇒`As you look at the pages of a stamp album , you can learn  interesting details about foreign customs , arts , literature , history and culture

`6. ⇒`Their colors can make you feel ralaxed and happy

`7. ⇒`Collecting stamp can become a business 

`8. ⇒`If  you are lucky in finding special stamps , it will bring you some money besides knowledge and pleasure 

*Cấu trúc:

(If + S + V(s,es), S+ V(s,es)/câu mệnh lệnh)

`+)` As có tính bởi vì: Khác với BECAUSE, khi dùng AS để giải thích lý do thì lý do đó người nghe/người đọc đã biết rồi