So, I have a... sort of a conflict with my professor? Last semester, I constantly angered him by being late class, not submitting my assignments in time, etc. Now, he just refuses to give me a mark higher than C, if I don't improve my behaviour..I don't know it will be possible due to some reasons (I have a job and am not going to quit it). So, can you give me some advice? How should I reason with him?