4. Nam spent 2 days having a trip to the country
5. The date of the meeting has been changed
6. It is not easy to find an apartment in a big city
7. We are interested in playing soccer
8. Nam asked me if my parents still lived in Nha Trang then
VII.
1.B
2.D
3.C
4.A
5.D
VIII
1.Yes,they are
2.Yes,they do
3. It is jeans
4. Because they want to look modern,young and independent
IX
1. If i were you, i would learn harder
2. She suggested going to Huong pagoda this weekend
3. Two days ago, my brother came to school late because he got up  late
4. The internet is a wonderful invention of moder life 
5. Our school is going to hold an  english speaking contest to celebrate Teacher's Day