I have something not expect one thing is missing one morning a library school friends to borrow books. After a stop. I will do exercises done searched throughout the home, ask anyone no one can see.Decided to come to school. It was on that day, I stressed and troubled. When the school open day have a friend back to the library. Remind me to have a friend to borrow the book. Cause this is caused by forgetting my own.But for me it is a very serious matter.