=>
I/
1. D
2. B
3. C
4. C
5. A
6. A
7. D
8. B
9. D
10. C
11. B
12. B
II/
1. go
2. seeing
3. watched
4. has learned
C/
I/
1. Where will the Elephant Race Festival be held next year?
2. How does Nam often go to school?
II/
1. How far is it from your house to your school?
2. We must always obey the traffic rules for our safety.
III/
1. It is about one kilometer from my house to the supermarket.
2. My father used to work by car some years ago, but now he goes by bus.
3. Despite studying hard, he didn't pass the exam.