初一作文初一叙事作文：an amusing experience

I had an amusing experience last week. When I was walking past a supermarket, I watched an advertisement on it. It had only a picture with a word on it 'Inexpensive'. But I thought that it 'expensive'! I was surprised because no one had seen it before! I asked one of the shop asistants for their manager's email address and quickly back home and wrote to the manager. After I sent it, I waited for it every day. I received the email he sent back on Sunday and he told me that it was 'Inexpensive' , not 'expensive'. I walked back there and looked at it again. Oh! My god! What a big mistake I have made!