My name is Tony. I’ve got a new job in a factory and started working yesterday. Everyone was very kind and friendly.    
    Mr. Brown showed me how to start and stop the machine. The buttons（按钮）on the machine had different colors, and the different letters on them showed different functions. But as it was my first day at work, I was very excited by everything I saw, so I didn’t pay enough attention to Mr. Brown’s words. Because of my carelessness, I made a mistake. I pressed the wrong button and the machine broke down.
    Luckily, my fellow workers helped me fix the machine and it started working again. I feel so sorry for my mistake. I will take more care at work in the future.