Homework for today

Homework is very difficult today. I failed the exam of the entrance of a university in high school. After high school graduation, I got a job at factory. I worked hard and saved somemoney for seven years. Also, I learned society activity by seniors at factory. If so, I passed the exam I couldn't have the experience. On the second thought, It was terrible. >>On a second thought,it was terrible. On a second thought, I was a urchin. >>On the second thought, I was an urchin. I can't understand the difference of the two sentences Please, explain me it.

Hi there! Thank you for your composition. Just don\'t lose hope and continue to study because there are better opportunities for people who are learned. See you! teacher KRISTEL Homework is very difficult today.>> Correct >> Better: My homework is very difficult today. I failed the exam of the entrance of a university in high school. >> I failed the university entrance exam.After high school graduation, I got a job at factory. >> After I graduate from high school, I\'ll work in a factory because I got a job there.I worked hard and saved some money for seven years.>> Correct Also, I learned society activity by seniors at factory. >> Also I learned some socital activities from the seniors working in the factory.If so, I passed the exam I couldn\'t have the experience.>> Moreover, I would have passed the exam but I wouldn\'t have experience at all.On the second thought, It was terrible. >>On a second thought,it was terrible. >> \"it\" is not capitalized.On a second thought, I was a urchin.>>On the second thought, I was an urchin.>> \"an urchin\"... You should use an because the word after it starts with a vowel (u).I can\'t understand the difference of the two sentences >> I can\'t understand the corrections on those sentences.Please, explain me it. >> Please explain it to me.