寿 ことぶき教室 きょうしつじゃなかったです
kotobukikyōshitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 寿教室

1. It wasn't a longevity class.; It wasn't a life extension class.

Past/Perfective
Negative
Polite
Casual Register