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y thanks for...I am writing to show my sincere appreciation for...I would like to convey in this letter my heartfelt thanks to you for… Thanks so much for...I am writing to express my sincere gratitude for your...I would use this opportunity to express my great appreciation for your timely help and of all, I must thank you for inviting us to...Nothing can be more precious for me than your understanding and encouragement at a time when...Your kindness at the time of … meant more than I can express in hope you can know how much I appreciate your hospitality and your many kindness to …But for your help, I would not have...Owing to your help, I could finally...Nothing will be able to erase our fond memories, we will nurture them again for everything …I shall always appreciate the assistance you have given 39。Close with either an expression of thanks or an indication of your intention to continue 1 : Thank someone for a favorDear Doctor Liu,It is a great pleasure to extend my sincere thanks to you for your careful treatment and attendance when I was in hospital this that night, I got acute appendicitis and was sent to your hospital by my I was very lucky to have you, an experienced and skillful doctor, on immediately diagnosed my disease, hospitalized me and arranged a timely operation for the following days you took good care of me and talked to me from time to time to release my was all because of your attendance and perfect professional skills that I could recover so , thank you again and I wish I would have