слова с предложением. a) order letter c) letter of confirmation e) letter of gratitude g) invitation letter i) letter of guarantee k) letter of apology m) letter of acknowledgement
b) letter of request d) letter of advice (f) letter of complaint h) letter of claim j) enquiry letter I) congratulation letter n) memo

I. a letter written to notify someone of incomplete or unsatisfactory work on a specific project; 2. a letter of thanks; 3. a letter written for a failure in delivering the desired results; 4. a letter written by a consumer to a manufacturer or retailer regarding a problem with a product or service; 5. a letter confirming the details of a purchase of goods or services from one party to another, 6. a letter used for praising a person on his success; 7. a letter requesting specific information or details on perhaps a product, a promo or something significant and useful to the sender 8. a short note written as a reminder; 9. a letter confirming something such as an oral agreement, a directive, an appointment, or a reservation; 10. a letter informing the reader that items requested in a prior communication have been received; II. a letter inviting customers to participate in business events; I 2. a letter asking for information or answering your questions; 13. a letter meant for safeguarding buyers to make sure that suppliers meet their obligations; 14. a supplier' letter to a customer giving useful information.