検定 けんてい教科 きょうか しょじゃなかったです
kenteikyōkashojanakattadesu

Noun
Desu Copula

The polite, past negative form of 検定教科書

1. Wasn't a textbook for the qualifying exam.; Wasn't an approved textbook.

Past/Perfective
Negative
Polite
Casual Register