a,
1. F
2. T
3. F
b,
1. Because the climate is not very good
2. It is special system that can heat all the rooms and hot water
PART D: WRITING
1. How far is it from Nam dinh to da nang?
2. In spite of being tired, he wanted to watch the film
3. If you are not careful, you will fall off your bicycle
4. Our teacher always drives carefully
5. Traffic rules should be obeyed strictly by road users