I need to start drywalling a room that was originally build for plaster.
While the studs are 16" on center, they don't line up with the corners. What
is recommended in this situation? Cut the drywall in lenth to match the
studs I have or add in a few extra studs at the 8' lenths?

Obviously added extra joists in the ceiling isn't pratical, so I suspect
I'll have to cut to match there.

Thanks,
Bernie