When I went to uni, I was examined on things I'd been taught over the last three years not months, and no I didn't do any past papers - they were not available. University was about being taught a subject - not just passing an exam.
My point was that there is no need to do previous practice for the tests because they are designed to detect your ability to learn and adapt. If you are rubbish when you start off, it's really not a problem. The areas where you do need to be good are your team skills, and I made this point too. I was actually attempting to be helpful, and get you targetting the important areas that you can't just learn and adapt to on the day, but that seems too have flown overhead.