This is a set of the 2024 edition of Sharoushi 24's training questions. As shown in the photos, there are check marks in pencil. There are only 3 blue sheets for the multiple-choice questions. There are red pen markings on the Industrial Safety and Health Law section of the selection questions only. There is a red sheet. The other selection questions don't appear to have been used much. Please understand that there may be other overlooked markings, so please consider this when purchasing. Thank you for looking.