DearMitchell:ThanksalotforlookingafterourpuppyBobowhenwewereoutforavocation.Itwassokindofyoutodosobecauseitsavesusplentyoftimeandmoney!Besides,youmusthavetakenafterhimverywellsincehelooksgreatandhappyaftergettingbackhome.WeusedtosendhimtoKENNELwhilewewereonthevocation.However,everytimehegetsback,heseemstobequiteupsetandkeptalongtimetobeinalowmood.Sowedecidednottoputhimtherethistime,andthat'sverysweetofyoutolethimstayinyourhomeforacoupledaysandmadehimwelllookedafter.Foroncemore,IshouldletyouknowthatIappreciateditverymuch!Yours:xxx7th.Apr.09说明：假如你是Catherine，给你的邻居Mitchell写一封感谢信。具体内容如下：1.写信时间：2009-4-72.事因：在你全家外出度假期间，Mitchell帮忙照顾你家的小狗Bobo，使你们省钱和省心。3.感谢她细心照顾，Bobo在你们回来之时非常高兴。以前把它放在狗狗寄存中心，度假完接它回来，它总是非常难过，要持续几个小时。