IV. Choose the correct words.
1. He seems not to run up/ run away/ run out of energy, so he can work for hours without stopping.
2. Strawberries are plentiful/ limited/ renewable and cheap in summer.
3. Our harmful/ available/ nuclear natural resources will run out soon.
4. Using green sources of energy can make the air cheap/ unlimited/ clean.
5. Solar energy seems to be limited/ unlimited/ harmful - we can rely on it for a very long time.
6. The air becomes worse because of polluted/ polluting/ pollution gases from that factory.
7. We should rely much more on limited/ expensive/ alternative sources of energy.
8. The river provides a limited/ plentiful/ polluting supply of clean water to nearby villages - they
don't worry about water supply any more.
9. The problem with fossil fuels is that they are not non-renewable/ renewable/ dangerous.
10. The public has more concerns about water/ nuclear/ solar energy because of waste.