I purchased and used this as the latest edition at the time for my studies. It's from 2019, so it's a bit old as a collection of past questions... There are no folds. There is writing, so I've marked it as "slightly damaged or with stains." There is no writing in the Level 3 section, but in the Level 4 section: - Writing and circled answers - Some highlighting in the explanations I would be happy if you could purchase it if you understand the above! Price reduction is possible! Thank you for looking. - Title: Biological Classification Skills Test Level 3 & 4 Explanation Collection - Year: 2019 - Publisher: Research Center for Natural Environment - Price: 1,451 yen + tax (questions), 1,429 yen + tax (explanations)