全是我自己写的哈,希望楼主好好改过自新,努力学习.letterofguarantee保证书mymostrespectfulteachersandmyclassmates:I'vedeeplynoticedmyfaultisseriousandtheconsequencesofthismatteractsanegativeeffecttoourclass,Ifeelverysorrytoyourall.it'smymistakeandi'lltakewhateverpunishmentthatcomestome,Ideservethis.ButI'mnotgoingtobeupset,causethingsnevergobackward,Whateverdoneisdone,Imustfacethetruthandtrytochangemyself.I'llbeagoodstudent,IknowthatandIhavecourage,Ihavefaith;Themostimprotantis,Istillhavesomanypeoplethatlovesme,andtheydocareaboutme.withyou,mygreatrespectfulteachersandmylovelyclasspals,I'msosurethatIcouldchange,I"lltrymybesttohonorourclass,Thisfaultwillnolongerhappensonmeagain,This,isapromise,apromisethatneverchange,thepromiseigiveyouall.我最尊敬的老师和同学们我已经深刻的认识到了我的错误的研中心和其后果对班级造成的负面影响,对此事我深深的感到抱歉,这事我犯下的错误,我也会接受任何对我的处分,这是我应得的惩罚；但我不会就此泄气和沮丧,因为事情不会从头再来一遍,错误已经犯下了,我就要勇敢的面对它,也要努力改变我自己；我会成为一个优秀的学生,我知道这一点,因为我还有改变的信心和勇气,最重要的是,我还有这么多深爱我的,实实在在关心我的人,只要还有你们,我最敬爱的老师和可爱的伙伴们,我确信我可以改正自己的错误,我会尽我最大可能为班级争光；这种错误不会发生在我身上了,这就是我的保证,是永远不会改变的承诺,是我对你们做出的承诺.落款