単剤 たんざい治療 ちりょうじゃありませんでした
tanza ichiryōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 単剤治療

1. It was not a single-drug treatment.; It wasn't single-agent therapy.

Past/Perfective
Negative
Polite
Terminal Form