The first book has one highlighted section, but it's not related to the learning material, so I don't think it will be a problem. The second book is brand new and unused. - Title: Live Commentary on English Grammar 1 - Author: Shunji Yamaguchi - Edition: Revised and Enlarged Edition - Contents: Separate volume of 900 frequently tested questions for entrance exams - Title: Live Commentary on English Grammar 2 - Contents: Separate volume of 900 frequently tested questions for entrance exams - Price: ¥1540 each (including tax) Thank you for looking.