1. The amount of water which is suitable to drink is less and less.
2. They waste a lot of water in their daily life.
3. Planting trees Trees are very helpful and important for us.
4. Not a clean environment,then the living conditions favourable meaningless.
5. To protect the earth is to protect ourselves.
6. As modern school students,we all know the environment is very important in our daily life.
7. Only by changing the way we treat the environment can we get along well with it.Only by saving the environment can save ourselves.
9. If we don't save water, the last drop of water will be a tear-drop of us.如果我们不节约水，那么最后一滴水也许会是我们人类的眼泪。
10. Save the earth, Our Only Home.保护地球，我们唯一的家。
11. No one can live without water or air.
12. Environmental problems are becoming more and more serious all over the world. With the development of industry and agriculture, cars make great noises and give off poisonous gas. Trees on the hills have been cut down,and waste water is being poured continuously into rivers. Furthermore,wherever we go today, we can find rubbish carelessly disposed. The whole ecological balance of the earth is changing. Massive destruction of environment has brought about negative effects and even poses a great threat to man's existence.
13. Do not throw rubbish onto the ground. Do not waste water. Use both sides of paper when you write. Stop using plastic bags for shopping. Make classrooms less noisy.不要在地上扔垃圾。不要浪费水。当你写字时要在纸的两面都要写。停止使用塑料袋去购物。减少教室里德吵闹声。
15. When the sky blue again,the rivers become clean,and the grass is always green,we'll live a healthier and happier life.
16. Handle with Care.小心轻放。
17. If we go on polluting water,the last drop of water will be our tears.
18. The most important question in the world today is pollution.
19. No one can live without water or air.没有人能离开水和空气生存。
20. Most environmental litigation involves disputes with governmental agencies.许多环保诉讼都涉及与政府机构的争端。
21. Governments of many countries have established laws to protect the air, forests and sea resources and to stop environmental pollution.许多国家制定了法律来保护大气、森林和海洋资源，制止环境污染。
22. Saving oer environment is everyone's duty.
23. Please keep off the grass.不要践踏草坪。
24. Don't litter the floor.不随地扔垃圾。
25. Environmental problems directly affect the quality of people's lives.环境问题直接影响人们的生活质量。
26. Nature is kind mother,the butcher is grim.
27. we can't live without water.
28. Even worse, they pour dirty water in to rivers.
29. It's everyone's duty to love and protect the environment.
30. As we know , water is very important to man.我们知道，水对人类来说是非常的重要。
31. Do not throw rubbish onto the ground. Do not waste water. Use both sides of paper when you write. Stop using plastic bags for shopping. Make classrooms less noisy.
32. Our earth is just our future.
33. They throw rubbish into rivers , too.
34. It’s our duty to save water节约水是我们每个人的责任。
35. We should stop factories from producing harmful gases.我们应该阻止工厂生产有害气体。
36. Everyone should remember that we have olny one earth.
37. We should take many measures to stop pollution.
38. The most important question in the world today is pollution.当今世界最重要的话题就是污染问题。
39. But some people don't care about it.
40. Something must be done to stop the pollution.
41. Let's do our best to make it more beautiful.让我们尽力让它更美丽。
42. Earth is our home, you rely on green.地球是我家，绿化靠大家。
