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III/
1. Less electricity will be used in the future. 
2. Public transport will be used when travelling long distances by the students in my school.
3. The lights will be turned off when I leave a room or go to bed.
4. A great deal of energy will be offered by wind power next century.
5. Sources of energy will be used more effectively for our future.
6. The use of biogas for cooking will be increased by people in the countryside.  
7. A hydro power station will be built in the North of the country next decade.
8. The problem of energy shortage will be solved by using solar energy.

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

5. Sources of energy will be used more effectively (by our) for our future

6. The use of biogas will be increased for cooking

7. A hydropower station in the North of the country will be built by them next decade

8.  The problem of energy shortage will be solved the problem by using solar energy