After I left school, I decided to go at/on/to university. I studied at/by/on university for three years. I did a degree for/in/of marketing. It was very interesting. I learnt all about/on/over sales and marketing. When I graduated for/from/on university, I needed to get a job. I wanted to work as/by/for a large international company. I applied for/on/with lots of jobs, but it was difficult because I didn’t have any experience. In the end, I got a job as/at/for a marketing assistant. It was a bit boring, but I was very good at/from/to my job. After a few years, I was offered a job as a marketing manager and was given an increase as/in/of salary. giúp mình với