12. I find collecting glass bottles interesting.
-->I think_________________________________________________________
13. He has talent, so people admire him.
--> Because_______________________________________________________
14.We started donating books and clothes ten years ago
--> We _________________________________________________________
15. I find playing sports interesting.
-->I think_________________________________________________________
16. I think reading books is very useful
--> I find__________________________________________________________
17. Linh finds playing board games boring.
--> I think_________________________________________________________
18. We have learnt English for 4 years.
--> We started _____________________________________________________
19. My father started to give up smoking last year.
