Yotsuya Otsuka Pre-Study Series Text 4th Grade Lower Semester Social Studies Exercise Workbook Answer Key and Explanation I confirmed that there are no writings, names, or markings. The attached answer sheets are also without separation or writing. As a used item, there may be some scratches and folds. *I may have overlooked something as I did not check every page. *Please understand that this is a used item before purchasing. Thank you for viewing.