環境 かんきょう問題 もんだい専門 せんもん じゃなかったです
kankyōmondaisemmonkajanakattadesu

Noun
Desu Copula

The polite, past negative form of 環境問題専門家

1. Was not an environmental specialist.; Wasn't an environmental expert.

Past/Perfective
Negative
Polite
Casual Register