This is a set of two books: "Good Questions 500 + 4 Skills: Fill-in-the-Blank Edition" and "Good Questions 500 + 4 Skills: Error Correction Edition" for English grammar and usage. I bought them around 2020. There were some light pencil markings in the problem book, which I erased with an eraser. I may have missed some, but they were written with light pressure, so they should be easy to erase. Please consider that these are used items, so they have some wear and tear. Available for immediate purchase. Thank you. ┈┈┈┈┈┈┈┈┈┈ "Good Questions 500 + 4 Skills: Fill-in-the-Blank Edition" Shinji Sato / John McLaren / Mary McLaren Price: ¥1200 #ShinjiSato #Shinji_Sato #JohnMcLaren #John_McLaren #MaryMcLaren #Mary_McLaren #book #language/English ┈┈┈┈┈┈┈┈┈┈ "Good Questions 500 + 4 Skills: Error Correction Edition" Shinji Sato / John McLaren / Mary McLaren Price: ¥1200 #ShinjiSato #Shinji_Sato #JohnMcLaren #MaryMcLaren #book #language/English ┈┈┈┈┈┈┈┈┈┈ #Kawaijuku #KawaiPublishing