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11. Being the head of the village, he often tells the villagers to protect the farmland.
12. Asking people about their salary isn't polite.
13. Studying abroad costs a lot of money.
14. Becoming a doctor takes a long time.
VI/
1. My Dad promised to buy me an ice-cream.
2. He invited me to have a drink with him. 
3. Nam asked Lan to lend him her bicycle for  a day.
4. The doctor advised me to take those medicines and go to bed early.
5. Nga apologized for dropping the jug.
6. The policeman accused the thief of stealing the bicycle.
7. The thief denied taking the bicycle.
8. Tom insisted on driving Kate to the station.
9. Ba admitted breaking the mobile phone.
10. David dreamed of being a rich man.
11. The manager warned the visitors against staying at the hotel near the airport.
12. Jane regrets not telling him the true.
13. The boy apologized for not having finished the assignment yet.
14. The man accused the boy of taking his bag.
15. Helen congratulated her brother on getting his promotion.
16. Peter suggested staying at home for a change.
17. Mary agreed to be there on time.
18. Daisy insisted on going home at ocne.
19. John was looking forward to seeing her the following week.
20. Marry offered to help Tom with his homework.