DearMr.Johnson，
ItakegreatpleasureinintroducingMaryBrownoneofmyclassmatesandbestfriendstoyou.Sheisgoingtopursuehereducationasapostgraduateinyouruniversityafterhergraduationhere.SheandIhadlivedandstudiedtogetherforfouryears.Nofrienddeservessomuchloveandrespectasshedoes.Nowthatwehavefinishedourstudyherewehadtopartwitheachother.
Willyoupleasegivehersomeguidanceinregardtotheentranceexamination?Anyinformationyoucanprovide，aswellasyourintroductionforhimtomeetthefuturetutorshallbeappreciatedverymuch.
Yourstruly，
Emma