1. Biogas will be used for cooking by them soon
2. Low energy lights will be used to save electricity by them
3. When more people drive cars, more carbon dioxide will be released into the air
4. On the next Earth Day, global warming effects will be discussed by them
5. Solar power will be converted to electricity more efficiently by solar panels
6. A new school for poor children will be built by them next month
7. These chemicals are sold everywhere in my hometown by them
8. The new president will be interviewed on TV by some people
9. The road to our village will be widened by them next year
10. His mother is very happy because he got the first prize at the competition
