Past perfect
Before Barça ______ (win) the European Cup in 1992, the club _____ ever ______ (win) the trophy
won / had never won
By the time the children ___________ (arrive) at the station, the train ______ _______ (leave)
arrived / had left
By the time Karim was 15, he _____ ________ (learn) 6 languages
had learnt/learned