交換 こうかん留学 りゅうがくじゃなかったです
kōkanryūgakujanakattadesu

Noun
Desu Copula

The polite, past negative form of 交換留学

1. Wasn't an exchange student.; Didn't study abroad (as an exchange student).

Past/Perfective
Negative
Polite
Casual Register