When I was 14 years old, I pretending my science project presentation. I should wrote science report due the next morning. When I almost finished the report, my mom called me to have a dinner. So I had a dinner quickly, and that is the problem. I turned off the screan before I saved the file. I restore the file all the night through. And next day, I left the file in my home. I must went home again to take my report. I couldn't do as well as I expected because I'm very tired. It cause bad result;I got a only second grade. It was terrible experience and I don't want me to repeat this kind of mistake again.