- I.Pointstoremember:冘Therearevariousoftypesofletters:Theyarea).lettersofcomplaint,b).lettersaskingfor/givinginformation,c).lettersofinvitation,d).lettersaccepting/refusinganinvitation,e).lettersexpressioncongratulations/regret/sympathy,f)lettersgivin...
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