1. what (làm gì để sống)
2. how
3. accent
4. expressing (thể hiện cảm xúc)
5. sociable 6. knew (If type 2) If + S + V2/ed , S + would/could...
7. caught (cấu trúc it's time + S + V2/ed)
8. had
9. for 6 years
10. carefully
11. symbolizes
12. fined
13. fresh (không khí trong lành)
14. use to go(có Did nên use về nguyên mẫu)
15. had told