Please consider this item, as there are check marks on the incorrect answers and some notes written while solving the problems. ☆ Please be sure to read my profile and understand before considering this item. m(._.)m This is a social studies problem book, perfect for high school entrance exam preparation. You can study efficiently with the answers and explanations. - Title: Super Efficient Problem Book for High School Entrance Exams: Social Studies - ISBN: 978-4-16-300129-3 - Answers and Explanations: Included Thank you for looking.