I'm really surprised at how many people say they can't access past papers for university exams.
Ask your student office, search the intranet, ask your lecturers. The past papers might not be handed out to you but they're usually available. At my uni they were kept in box files behind the desk in the student office, we had to check out a box file, look at it in the next room then check it back in. It was a pain but well worth while. Eventually they all got put onto the intranet but you had to search to find them.