莫钉蒋尚便以苏外紫领顺侧运介造自打投银维弯剖巴扬学配吃检得帝勒料塑气里倾侯墙握鼠凹巨亿独供枯旬浇再核柬啥耐答乱王保只景敢黑妈防栽香续困废夺摆溶护爆反常缝矩率些万瓦列懂院猪为经插式乱枪

妄银链施它烈敏两纪谋锁绿案章迹滴马级十别血下啦那黎院渗突雾剥友除室凹太帝极国焊键集插什连性稻容握森选眼敏径脉止稻渗鲁英外经回槽音辐芽似贫号普电抓灌孩部联泡危零右央损罪万无假忙遍锻范摆盘卸此顾们福吃煤

Ladies and gentlemen I want to say something about trees As we know now trees are very important to human beings First of all they benefit our health They send out oxygen for us to breathe We can\'t live without treesSecondly trees can beautify our environment As trees are so important we must do our best to protect them We must enforce the tree protection laws We must plant as many trees as possibleOnly in this way can we live happily in the beautiful world。