Difficult School Past Exam Series Osaka University English 20 Years [3rd Edition] from 1991 to 2010 I am sending you this book. As for notes on learning progress, there are markings on a few pages of the answer explanations (e.g., see photo 6). However, there are no markings on the question pages except for lines on question numbers 38, 39, and 41 (photos 7, 8, and 9). Also, there are no tears or noticeable stains on the pages, and I believe there will be no problem practicing past exam questions.