past progressive tense

I was brushing my teeth _____ my sister was making tea.

He was riding a horse_________ the car drove to the stable.

Sue was walking along the path __________ it started to rain

You were washing the dishes __________ I was drying them.

Kate was speaking to he doctor _________ her mobile telephone rang.

We were discussing the film _________ Mary was looking through some magazines.

The waiter was carring the tray _____ he dropped a glass.

Sam was crossing the street ___________ he saw his friend at the bus stop.

Lin and Wendy were preparing for the test_________ the postman knocked the door.

The child as eating soup _______ his mother was making salad.