I was wondering what TPR books you people are talking about with the practice exams A-D that are hard. I would like to acquire this book to assess my weaknesses and I have been looking around for it. Unfortunately, I haven't been able to find any TPR books in Canada specifically at Chapters. Also I'd like to acquire some Berkely Review practice exams that are said to be challenging and again I haven't seen these books anywhere. Any help would be appreciated!