たん細胞 さいぼう生物 せいぶつじゃありませんでした
tansaibōseibutsujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 単細胞生物

1. Was not a single-celled organism.; Was not unicellular.

Past/Perfective
Negative
Polite
Terminal Form