1. If you turn off all the lights, you won't pay more money

2. If she doesn't wear warm clothes, she will have a cold

3. If you don't be careful, you may have an accident

4. If you don't phone your parents, you have a trouble

5. If she doesn't whisper, everyone knows what she is saying

6. If you stay here, you will feel save

7. If you don't pay electricity bill today, your electricity will be cut off

8. If you don't stop smoking, your could may be worse

9. If we don't use less fossil fuel, they will be run out soon

10. If it doesn't stop raining today, we may be faced with a serious flood

1. If you turn off all the lights, you won't pay more money 1. If you turn off all the lights, you won't pay more money 2. If she doesn't wear warm clothes, she will have a cold 3. If you don't be careful, you may have an accident 4. If you don't phone your parents, you have a trouble 5. If she doesn't whisper, everyone knows what she is saying 6. If you stay here, you will feel save 7. If you don't pay electricity bill today, your electricity will be cut off 8. If you don't stop smoking, your could may be worse 9. If we don't use less fossil fuel, they will be run out soon 10. If it doesn't stop raining today, we may be faced with a serious flood