Thank you for viewing! Yotsuya Otsuka Weekly Test Problem Collection Social Studies, Grade 5, Complete Set (Upper and Lower Volumes) *2022 Edition *With Answer Key and Explanations [Condition] ・Regarding the problem collection, as shown in the photos, there are a few pages where incorrect answers have been checked with a ballpoint pen. (Only in the Lower Volume, 8th session, bc problems). The answer key is not detached and is all included, and there are no other writings. ・Regarding the answer key and explanations, there are a few pages with writing in ballpoint pen or marker. ↓↓↓↓↓↓ Considering the above points, I would like to sell this as a used item to those who understand that it has been stored at home and has been inspected by an amateur.