根据所给中文提示语，以“Saving the Earth’’为题写一篇80字左右的段文。注意语句扩展，意思连惯。段文开头已给出。
中文提示语：1.任何保护环境已成为世界最大难题之一。
2垃圾污染环境、损害健康，不要到处扔垃圾。
3.废水流到江里、湖里和田地里，污染农作物，杀死大量的鱼。
4.保持环境干净和整洁。我们只有一个地球，应该保护她，使我们的家园更加美丽。
所给词语：pollute , harm, throw, rubbish, pour, try one’s best
Saving the Earth
How to protect the environment becomes…..                                                
                                                                                     
                                                                                    
                                                                                     
                                                                                       
                                                                                        
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