広告 こうこく代理 だいり ぎょうではありませんでした
kōkokudairigyōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 広告代理業

1. Was not an advertising agency.; Was not in the advertising agency business.

Past/Perfective
Negative
Polite
Formal Register