Für das Passiv in der Vergangenheit nimmst du was oder were + Partizip Perfekt.
was / were + Partizip Perfekt
The school was opened in 1995.
The letters were written in 1990.
Probier es aus: Man: Did you get my letter? Woman: No. Maybe it ___ to the wrong house. Wähle aus, was die Frau sagt. (was found / delivered / was delivered / found) Antwort: was delivered — Sie hat den Brief nicht bekommen, also wurde er vielleicht ans falsche Haus geliefert: it was delivered. Der Brief steht am Anfang, deshalb ist das Verb im Passiv.
was stolen, was built – gestohlen, gebaut
Fang mit der Sache an: My phone was stolen.It was built in 1920.
My phone was stolen.
It was built in 1920.
Not "My phone was robbed." — say "My phone was stolen.". Eine Sache wird stolen, nicht robbed.
Probier es aus: Man: You have a new TV! Woman: Yes. The old one ___ last week, when we were on vacation. Wähle aus, was die Frau sagt. (was washed / stole / was stolen / washed) Antwort: was stolen — Sie waren im Urlaub und der alte Fernseher ist weg, also wurde er gestohlen: it was stolen. Der Fernseher steht am Anfang, deshalb ist das Verb im Passiv.
made in + ein Ort
Mit made in + einem Ort sagst du, wo ein Ding hergestellt wurde.
It was made in Mexico.
Probier es aus: Man: Is this clock from here? Woman: No, it ___ Spain. Wähle aus, was die Frau sagt. (was made of / was made in / was made by) Antwort: was made in — Spanien ist ein Ort, also: the clock was made in Spain.
Fragen: When was it built?
In einer Frage steht was oder were vor der Sache.
When was it built?
Where were these shoes made?
Probier es aus: Man: This sofa is so nice. ___ made? Woman: In a small town near here. Wähle aus, was der Mann sagt. (When was it / Where was it / Why did it) Antwort: Where was it — Die Antwort ist ein Ort, also hat er gefragt Where was it made?