We could see that the storm ruined most trees and buildings in the city center.
We could see that the storm had ruined most trees and buildings in the city center.
At the concert they realized that they hadn’t known most of the songs the band was playing.
At the concert they realized that they didn't know most of the songs the band was playing.
The police had come, asked us a few questions and left.
The police came, asked us a few questions and left.
I didn’t know what to think – did I meet him before or was I mistaken?
I didn’t know what to think – had I met him before or was I mistaken?
Before Leonardo Dicaprio won an Oscar he played so many good roles.
Before Leonardo Dicaprio won an Oscar he had played so many good roles.
Our teacher forgot to cancel the lesson so we all were confused to see an empty classroom.
Our teacher had forgotten to cancel the lesson so we all were confused to see an empty classroom.
I wasn’t preparing for the exam, that’s the reason why I failed.
I hadn't prepared for the exam, that’s the reason why I failed.
