1. In the future, people won't burn coal or wood
2. In the future, more electricity will come from renewable energy sources.
3. Will the cost of electricity increase in the future?
4. My country won't get electricity from wave energy. We're far from the ocean.
5. Will taxis soon be electric cars?
6. In 50 years, will we have robots in our homes?
7. There won't be enough drinking water in the future.
8. In about 30 years, most people will live in cities.