I ____ (give) my friend a ride to the airport when my car ____ (break down).
I was giving my friend a ride to the airport when my car broke down.
When I ____ (wash the dishes), my ring ____ (fall off).
When I was washing the dishes, my ring fell off.
When I ____ (look up), the train ____ (leave) the station.
When I looked up, the train was living the station.