Japanese certificate examination

Today, I took Japanese certificate examination with my friends in my university. The certificate examination was fine. I can’t be convinced I pass in it. After the certificate examination finished, I and my friends went to the university’s library. They would enjoy us then. I want to join them, but I could not do it because I had to work part-time. My part-time job has Saturday and Sunday. I understand it, but I have I must absent it by very important matters that for example, my university’s supplementary lecture and tests are. I have I must do many matters, so I wanted some absents. However, my employer seemed to understand it. He must be in trouble by me. I think be sorry for him, they are necessarily. Perhaps I may quit this part time because if I’m in there as it is; I trouble for him and some members. To work is very difficult!!! (154 words/ 8830 words)