浚渫 しゅんせつ作業 さぎょうじゃなかったです
shunsetsusagyōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 浚渫作業

1. Was not dredging work.; Wasn't dredging operations.

Past/Perfective
Negative
Polite
Casual Register