Написать полуофициальное (semi-formal) письмо по (100-140 слов)! вот предыстория: you have just a spend a month in england doing an english course at language school. you stayes with a lady called mrs smith while you were there. write a letter to mrs smith thanking her for your enjoyable stay and asking her to send you a diary you left in your room by accident.

Dear Mrs Smith,
I can't tell you how much I appreciated your kindness in letting me stay at your home during the past month. Your family is wonderful, and I couldn’t have felt more welcome. I truly enjoyed the time I had in England, it was an unforgettable experience.
I am writing to ask you a little favour. I'm affraid I have accidentally forgot to take my diary when I left your house. As far as I remember, it is in my room on the desk. This diary means a lot to me. I'd be grateful if you could send it to me as soon as possible. I hope that this does not cause you any inconvenience, but please contact me if it is a problem.
Yours sincerely,