The detective was investigating the crime scene at ten this morning.
Agatha Christie wrote about 80 detective stories in her lifetime.
While the policeman was collecting the evidence, a reporter arrrived to ask some questions.
James woke up at four o'clock every morning.
We watched a documentary on the pyramids and wrote a report about it.
I was reading about the crop circles while my brother was watching a DVD.
An action that was in progress at a specific time in the past.
Past routine and habits.
Two or more actions that were in progress at the same time in the past.
An action or situation which started and finished in the past.
An action that was in progress in the past that was interrupted by another action.
Actions which happened one after the other in the past.