II. 1. lots - 2. there - 3. rivers - 4. south - 5. longest - 6. than - 7. flows - 8. the - 9. high - 10. has
III. 1.T - 2.F - 3.T - 4.F - 5.F
I. 1. younger -> youngest
2. busyer -> busier
3. have -> has
4. Chinan -> Chinese
5. height -> high
II. 1. to the supermarket every day on foot.
2. How much does this hat cost?
3. What about singing an English song?
4. This house is the oldest one in the village.
5. Are there twenty classrooms and six hundred students in your school?
6. There are a living- room, two bedrooms and a kitchen in my house.
7. How heavy is your father?
8. This is my sister's pencil.
9. When does she go to work?
10. What is the height of this building?