2. We are trying to find cheap and clean and effective sourced of energy.
=> We are looking…………………………..
3. Will solar and wind replace fossil fuels within 20 years?
=> Will fossil fuels…………………………………..
6. It’s a good idea to switch off electrical appliances when they aren’t in use.
=> You………………………..
7. Although coal is the most polluting of fossil fuels, it is still the largest sources of energy worldwide.
=> Despite……………………………..
8. Biogas will be used for fuel in homes and for transport.
=> People………………………………….
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