Past Simple
They _____ (speak) French to the waitress.
They spoke French to the waitress.
What ____ (you/do) when I _____ (call) you last night?
What were you doing when I called last night?
At the age of 23, she _____ (become) a doctor.
At the age of 23, she became a doctor.
She _____ (stand) under a tree to shelter from the rain.
She stood under a tree to shelter from the rain.