When /as, while in Past Continuous

Father was reading some papers... mother came into the room.

Jane was cooking a vegetable salad... she found out that there wasn't any salt in the box.

... Mary was writing a test, her friend was waiting for her outdoors.

... Sheila was typing a report, Bob was surfing the Net in search of some information.

... the rescue brigade found the injured man, he was lying unconscious on the ground.

The boys were playing basketball... the ball flew into the window.

... my mother was watching her favourite show on TV, father was making coffee.

Nelly was sleeping... the alarm - clock rang.

The sun was shining brightly... they set off for a picnic.

We were writing a test... our headmaster came into the room.

The daughter was eating soup... her mother was making salad.

You were washing the dishes... I was drying them.