場当 ばあたり稽古 けいこじゃなかったです
bātarikeikojanakattadesu

Noun
Desu Copula

The polite, past negative form of 場当たり稽古

1. It wasn't impromptu practice.; It wasn't ad-libbed.; It wasn't done on the fly.

Past/Perfective
Negative
Polite
Casual Register