1. Vietnamese people are very warm and friendly. (friend)
2. La Hill is a humorous writer. (humor)
3. I’m extremely sorry for coming late. (extreme)
4. I love the peace of the atmosphere in the countryside． (peaceful)
5. Bao is very sociable, kind and generous． (social)
6. Each of my friend has a different character. (difference)
7. We are good friends although each of us has a different character (characteristic)
8. He spends most of his time doing charity work． He’s a sociable man．(social)
9. He has a sense of humor because he often tells jokes. (humorous)
10. Nam makes friends very easily because he is very sociable．(ease)
11. Hoa is very preservative. She doesn’t talk to anybody in her class. (reservation)
12. A(n) orphan is a child who lost his parents.(orphanage)
13. They were very lucky to survive a fire. (luck)
14. Nga often helps poor and homeless people. She is generous .(generosity)
15. Luckily, her sister passed the driving test. (luck)
16. My uncle often spends his free time doing volunteer at a local orphanage. (orphan)
17. I love the peaceful of the summer evenings in the countryside. (peaceful)
18. My father is loved by his colleagues because of his sense of humor. (humorous)
19. A child whose parents have died is called an orphan. (orphanage)
20. An orphanage is a home for children whose parents were dead. (orphan)
21. I find him quite reserved in class. (reserve)
22. I think learning a language is very interesting. (interest)
23. She gets annoyed when people smoke in the restaurants. (annoy)
24. It was surprising that she didn’t go to school. (surprise)
25. He always does his homework carefully. (careful)
26. I can do all of these exercises easily. (ease)
27. Her sister plays the violin very beautifully. (beautiful)
28. Paul works very hard in his new job. (hard)
29. She looks happy because she gets good mark. (happiness)
30. I find it difficult for me to answer her question. (difficulty)