4．I was a high school student then，from low-income family．So I have to work to support my family．My first one job was to clean tables in a small restaurant．I still remember going there early and felt anxious about the new world．I worked harder because I was afraid of losing the job．At night，I was sometimes very tired to do my homework．And I came to understand that was not easy to earn money，and that knowledge could change my life．So I learned from the job，in a way，was much more important as what I earned in class．
