What your mother (do) when you last (see) her?
What was your mother doing when you last saw her?
What you (watch) at the cinema when you (go) there last time?
What were you watching at the cinema when you went there last time?
Wht you (begin) learning English?
Why did you begin learning English?
When (be) the last time when you (hurry) somewhere? Where you (go)?
When was the last time when you were hurrying somewhere? Where were you going?
What you (do) at your last birthday?
What did you do?
