7. Pay electricity bill today or your electricity will be cut off. If .......................................................................................................... 8. Stop smoking otherwise your cough may be worse. If .......................................................................................................... 9. Unless we use less fossil fuel, they will be run out soon. If .......................................................................................................... 10. Unless it stops raining today, we may be faced with a serious flood. If .......................................................................................................... 11. Do morning exercises regularly, your body will be fitter. If .......................................................................................................... 12. Unless we renewable energy, we will have nothing for the future generation. If .......................................................................................................... 13. The climate will change unless we reduce the use of non-renewable energy. If .......................................................................................................... 14. Lock all the doors and noone can break into your house. If .......................................................................................................... 15. Unless we continue hunting polar bears, they will become extinct in near future. If ..........................................................................................................