What did you do before you went to sleep last night?
...
What was the last film that you watched at the cinema?
...
What were you doing when the teacher arrived?
...
I ___ (prepare) for the exam from 9AM to 2PM yesterday.
was preparing
She ___(cook) dinner when she ___(see) a giant spider in the kitchen.
She was cooking dinner when she saw a giant spider in the kitchen.
Where do you go on your last holiday?
...
The children ___ (sleep) when their father (come) home.
The children were sleeping when their father came home.
When ___ you ____(get) your test scores?
When did you get your test scores?
What did you do when you woke up this morning?
...
When my sister ____(receive) my text, she ____ already ____(leave).
When my sister received my text, she had already left.
When we ___ (arrive) at the party, they ___ already ____(slice) the cake.
When we arrived at the party, they had already sliced the cake.
He ___(not study) for his exam when his mother ___ (arrive).
He wasn't studying for his exam when his mother arrived home.