which were
Dobbiamo scoprire quali erano gli amici di Vanessa.
We need to find out who Vanessa's friends were.
— Tesis (1996)
Quali erano le previsioni del tempo?
What was the weather forecast?
What were the challenges?
Quali erano le tue impressioni a riguardo?
What were your impressions about it?
Quali erano le vostre materie preferite a scuola?
What were your favorite subjects in school?