We were walking along the street when the storm ______ (begin).

Martin ______ (clean) his car when his father arrived.

John ______ (watch) the match when the light went out.

I was doing my homework when she ______ (phone) me.

He was cleaning the window when I ______ (see) him.

While I ______ (look) out of the window, I saw an accident.

We ______ (play) in the garden when my father came home.

All the students ______ (stop) talking when the teacher walked in.

The phone rang while we ______ (have) breakfast.

When I ______ (see) Susan, she was working.