What confused things have you done?

I left my admission ticket at home during the college entrance examination, which is the most confusing thing I have ever done. I remember on the eve of the college entrance examination, I was full of confidence. I always thought I could get into a good university. After all, I made unimaginable efforts in my senior year. When I entered the examination room the next day, I suddenly found that the admission ticket was gone. You know, you are not allowed to enter the examination room without an admission ticket. I was particularly anxious, and my mind recalled that my eldest nephew came into my room last night to look through my admission ticket. I think I must have left it at home, but my home is far from the examination room. I really can't help it. I called the teacher who sent me to the exam. The teacher was also very angry and asked someone to give me a temporary admission ticket. When I got the admission ticket, the exam had already started for fifteen minutes. I can't calm down and keep complaining about how I can be so confused! Why don't you check your schoolbag when you pack in the morning? This is why I didn't do well in the college entrance examination.