Honestly, there are so many papers out there to use, even if you don’t know the content just look for questions you can do. Don’t go through top school papers tho as they tend to make the best practice under timed conditions, however other schools just go through them. Also, when you do papers I highly recommend you make a mistake book, and at the end of the week try to redo all the questions without making errors (add even the smallest of mistakes), and day before ur exam just go through the book and make a list of all the mistakes u made (calculator, added wrong, etc) and read that list before ur exam.