How are you? I am writing because when I came back home and I unpacked my suitcase I saw that I have your notebook. Probably when I packed up my things to the suitcase I took your notebook. (of course be chance!)
I'm sorry and I hope that this isn't a big problem for you.
Tomorrow I will go to the Post Office and I will send your notebook by post.
At the end I want to ask you about an English course.
Are you satisfied? I'm positive supise because I learned a lot of new English words. I got to know about towns in Great Britain and my speaking skills are improving. I hope that I will still see you. Anyway, I have to finish now and I am waiting for your letter.