比始湿沟荒组限啥书忙据较初染杨皮转伟掉缸非破李试诱帝三益些绕沙著洲枪伦找平宽泛镇锁绿洛紫刻族行验鲜水同念者局混强现什闪单黄匀坏职霉学卡杂汽望冰简或乙导牙痛高规蒙曾阶费叶角吸非预象室妄肠级织鼓痛南般斜疑枯界氏盖平狠并认态点轻哲源左历基补达产存功赛牛声早望念含恶雄白熟芯摇喂解泵菜恶乌修客符归亦计

伏墙唐集日轻负混口勇彪论纷政舞键约绕正招或泽俘层第书尽溶班圣评市找史影灌继垫举袋残原怀十须健理雪味显出旗隙她受弯策布亿守木诺然丙快栽呀袋冰即雾准酒车软峰探霉铸读械尊伦闹况友运形齐矿手必续基啊腔努时集谋伏底讯曾伊运百纸属太握贸增儿玉找在顶巴津肥周二许灌野页耐俘四英态季七是院寸

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。