1. If you walk to school, you will make the air less polluted.

2. If you use recycled paper, you will save a lot of trees.

3. If the Earth becomes hotter, the plant and animal will die soon.

4. If parents teach their children about the three Rs, they will help environment so much.

5. If you want to save a lot of electricity, don’t use the bulb

 1. If you walk to school, there will be less air pollution.

2...., you will save a lot of money.

3...., the animals and people will die.

4...., they will know how to help our Earth.

5...., you will have to turn off all the lights before going out.

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