You stayed at your friends? house when you participated in a business seminar in Australia. You left a file with important documents in your room.
Task: Write a letter to your friend, describing the file and ask him/her to return it to you by post.
My dearest Philip,
I am sorry I am writing only now. Firstly, I would like to thank you for all the attention and support you gave me while I was in Sydney. Things like that are priceless and all I can give you is my gratitude. I expect you and Ingrid to come to Rio soon, so that I try to somehow propiciate equaly（propitiate equally） joyful moments as those you propiciated（propitiated） to me. I am writing also, because of the fact that I forgot a very important document in the room I used in your house.
This document is a signed contract and was the most important reason of my trip to Australia, after the business seminar I attended. You certaintly（certainly） can wonder how desperate I have been in the last days looking for this document midst my luggage. I could not find it anywhere and am sure I left it in your house.
Please let me know if you find it, and post it for express delivery as soon as possible. I will pay for the expense; just let me know what is your bank, account and branch numbers.
With best whishes,