So I have been having a hard time witing because every time I turn in a assignment to a teacher for grading one of my problems are run ons. I have a hard time of figuring out where commas go in sentences and placing them. Also with fragment I would also write a sentence I think is complete when really it is not so I get marked down for it. When I answer a question and I just write down the answer I would answer it and get marked down for that. What should I do about sentence run ons and fragments? What could I do to change this?