Assignments bugging me

At this last hour at the college, assignments are bugging me. The worst part of this is that every time I come across a class mate, they asked me whether I had done the assignment or not. Am I the only one who is doing this job? Its like that I have taken this silent responsibility of doing the assignment for everybody and then everybody will copy it form me. It sound nice if I were to be on the other side of copying but that part is also so boring. You have to keep writing for a long long time and you have a very little time to copy. That's why I prefer this side of doing the assignment rather than copying, at least I get a long time to do it and it always gives me satisfaction of doing my own job. Hope my classmates wont mind this very much. :) :)