<human>: Can you provide a brief rundown of the text in within 3 sentences?

Hey Reddit,

I'm wondering if it's fair to not give homework credit if there are two, or three questions wrong/missing out of 15-20. He will hand them back, but he doesn't tell me *why* it was wrong, he just tells me what questions are wrong. I'm doing terribly in his class and there's nothing I can do about it. I can try to hand it back, but theres still a few wrong (He doesn't tell me why its wrong remember) Also, If you did your work elsewhere (on a separate sheet of paper or something like that) He won't give any credit for paper with no work. Is he being unfair?
<bot>: Teacher won't accept my work because it has a few wrong/omitted answers and I'm failing because of it