After a while, I found that mysterious footsteps were still following me. I'm starting to get a little scared. Is someone following me? who is it? At this point, my heart is full of questions. Finally came to the front of the duty room, I slowed down and turned back quietly, but I didn't see anything.
After a pause, I walked on and the footsteps rang again. My heart is nervous again, isn't it a ghost? Although I don't believe in ghosts in the world, I'm still a little scared. I quietly looked behind me, and the scene surprised me. It turned out that a diligent cleaner followed me all the way to clean my fallen chestnut shells. Suddenly, my face turned red. I quickly picked up the chestnut shell that had just fallen and threw it into the trash can, leaving in a despondent way.
I turned back, and the cleaner wiped the sweat from his forehead and smiled at me. I will never forget that smile. It tells me to be a good boy, correct my mistakes and be a civilized person who knows how to respect the work of others.