I
1. It is about 100 km from Hanoi to Thanh Hoa
2. Despite being so young, Quang Hai footballer plays football beautifully
3. My father used to live in a small village when he was a child
4. How far is it from Thanh Hoa to Hanoi city?
5. I used to walk to school when I was a student
II
1. Less electricity will be used by our in the future
2. Public transport will be used by the students in my school when travelling long distances
3. The lights will be turned off (by me) when leaving a room or going to bed
4. A great deal of energy will be offered by the wind power next century
III
1. Solar energy will be used by many countries in the world.
2. How will you travel from one place to another?
3. We will reduce the use of electricity to save our energy.
