... How can you express your gratitude? - Make a phone call - Write an email - Send a letter, … In this period, we will study and practice writing a formal thank-you letter. 1. donate /dou'neit/ ... faithfully. - I am most grateful to you for … - I would like to express my sincere thanks to you for … - On behalf of … I am writing to thank you for … - My heartfelt thanks go to you for … - I am ... làm từ thi n 3. gratitude c. giấy biên nhận, biên lai 4. issue d. sự biết ơn 5. receipt e. phát hành, lưu hành Main parts of a letter ? ? ? ? ? 1. Address & date 2. Greeting 3. Body 4. Closing...