dear_________,
i am writing this letter to e_press my sincere gratitude for___________.had it not been for your assistance in ___________,i fear that ___________may not have____________.i’d like you to know that your help __________.it not only____________,but also__________.i shall always remember__________.
i hope that i will have the opportunity of returning your hospitality by inviting you to ______.will you kindly let me know whether you____________?i am looking forward to seeing you soon!
again,i would like to e_press my thanks to .please accept my appreciatin and pass my best wishes on to ____________.i hope to hear from you soon.