Sort out the sentences. Informal sentences. Formal sentences. Can’t wait to see you. You have been very helpful and I thank you for ... It is with great pleasure that we offer you ... Drop in whenever you get the chance. Why don’t you come and visit us? You are cordially invited to attend ... By the way, I forgot all about ... Please accept our sincere congratulations on ... Drop me a line when you can. Hope you can come. I am writing in response to your request ... I would like to inform you that you have been chosen ... I hate to say it but I think I’ll have to miss ... We regret to tell you that ... I trust that this will answer your query. I am writing with regard to the advertisement ... In reply to your complaint about ... I’m so happy you passed your exams. How about getting together next Sunday? I look forward to our meeting.

Задание

Sort out the sentences.