11. He spends his free time doing volunteer work at a local orphanage near his house.
12. Of all my friend, Peter and Jack are the one I spend most of my time with.
13. the sun rises in the east and sets in the west.
14. I don't think my English is good enough to be a member of the club.
15. My younger brother has curly short black hair.
16. Mike is a hard-working student who always get good grades.
17. Jane isn't old enough to stay alone at home.
18. I was happy enough to receive a letter from my old friend yesterday.
19. we like the peaceful and quite atmosphere of the local library.
20. Lan showed Nien around and introduced her to many new friends yesterday.
