視聴覚 しちょうかく教材 きょうざいじゃなかったです
shichōkakukyōzaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 視聴覚教材

1. Wasn't audiovisual materials.; Wasn't a teaching aid.

Past/Perfective
Negative
Polite
Casual Register