I havent heard from you for ages. How are you doing?I havent seen you for such a long time. How are you getting along with your work? I want to congratulate you with all my heart. I warmly congratulate you on what youve achieved. I am most grateful to you for your help. I want to thank you heartily for what you have done. I wonder if you could tell me what to do. Id be most grateful if I could have your full support. Please could you let me know something about it. Is there any chance of your coming to have dinner with us at our home? We are wondering if you could come to have dinner with us at our home. Im delighted to accept your invitation. Thanks for your invitation. Im certainly looking forward to joining you. Im sincerely sorry that we cant join your dinner party. I regret to say no to your invitation. Thank you for your invitation but unfortunately I do apologize for having kept you waiting. Im awfully sorry for giving you so much trouble. Im more than sorry to hear of your illness. I cant tell you how sad I felt when I heard of It was a great shock to hear I just cant tell you how saddened I am Im most grieved to learn of I am happy to hear that Thank you for answering my letter so quickly. With my best wishes Best wishes to you Please remember me to I do hope The Opening paragraphThank you for your letter of I was glad to receive your letter ofIn your letter of you enquire aboutIn reply to your letterI am writing to youWe have received your letter of May 5,I am writing to inquireWe were very happy to learn from your letter of May 5 thatThank you for / with reference to / Further to / In reply to your letter of / datedI am writing to enquire about./ to confirm that/ to apologize for/about / in reply to your / with reference toThe Closing paragraphI hope to hear from youI look forward to our next meeting. / your answer / your early reply.I am looking forward to hearing from you soon.I thank you for your I look forward /am looking forward to hearing from you soon.I do hope I am not giving you too much trouble.I would greatly appreciate an early reply.If you have any further questions, please contact me onI look forward to hearing from you soon. / in due course. / in the near future.I am hoping for / would appreciate your speedy/prompt/early reply as weI shall not act / will wait until I hear from you. / have received yourWe would like your views on the possibility ofI would be happy if you would send me as soon as possible.We thank you in anticipation of your help.Letter of Inquiry or RequestI am writing to enquire aboutI am interested in yourI would be very grateful if you could send meI would like further information aboutI am very / most/ extremely/particularly interested in yourI am writing because/on account of/at the suggestion ofWe wonder if you could help / advise / send us / let us haveThe has given us your address and has advised us toYour company has been recommended to us by Could you (possibly) / Would you please / Would it be possible for you to send me/ let me know whether./ consider supplying us withPlease quote your best price and state yourI would like you to./ to order from your company.I would be happy/ grateful if you would/could send me.We would appreciate your sending usLetter of ApologyI am writing to apologize for / aboutThis was due toUnfortunately, we have been unable toI am sorry for any inconvenience this has caused.I can assure you that we willLetter of ComplaintI am writing to complain aboutI am not satisfied withI must therefore insist thatI recently ordered/purchased from you .Thank you for your, which arrived yesterday. UnfortunatelyHaving spoken to the company secretary I decided to write it about .I am writing / because . / to draw your attention to./ on account of ./on the subject of .I feel something ought to be done/said about .I am afraid that I am forced to write to you about .I am sure you will appreciate the annoyance and frustration of.I find it awful/appalling/quite distressing that .I am writing to complain about.Letters of Application:IntroductionIn todays newspaper I noticed your advertisement for .Through . I have learned that you are hiring .It has come to my attention that the position of. is now open.I would like to apply for / to be considered as a candidate for the job /post / position / scholarship advertised in . / (that) I saw adv