1. Solar energy/ can/ use/ heat/ water/ homes

=> Solar energy can be used to heat water for our homes.

2. within 20 years/ fossil fuels/ will/ replace/renewable sources.

=> Within 20 years, fossil fuels will be replaced with renewable sources.

3. this time next moth/ we/ will/ use/ solar power/ heating/ water

=> This time next month, we will be using solar power for heating water.

4. fossil fuels/ limted/ and/ they / harmful/ the environment.

=> Fossil fuels are limted and they are harmful to the environment.

5. Climate change/ cause/ the burning/ oil and coal/ in order/ produce energy

=> Climate change is caused by the burning of oil and coal in order to produce energy.

6. Last year/we/ fit/ solar panels/ our house/ provide/solar electricity.

=> Last year, we fit solar panels in our house to provide solar electricity.

7. Every day/ we/rely/ energy/ provide/ us/ electricity, hot water, and fuel.

=> Every day, we rely on energy to provide us with electricity, hot water, and fuel.

8. electric cars/ more/ popular/ petrol cars/ the next 15 years?

=> Will electric cars be more popular than petrol cars in the next 15 years?