How are you? I hope this letter finds you well. I am sorry that I have not been in touch with you lately, but that's so because I was preparing for the English exam for the last couple of months, but I was really glad to hear from you after such a long period of time.
Anyway, you should know, that I have completed the B2 level and I am very excited to let you know that I have taken the language test perfectly and I can finally relax a bit. I learned all of these rules and new words watching the video lessons, listening to the BBC-news, various podcasts and reading articles. You can not imagine how useful were the textbooks by Murphy that you gave me before. These materials turned out to be truly helpful for understanding perfect tenses, which were the hardest to me. So thank you a lot for your invaluable help.
All the best,