We were watching TV from seven to nine last night.　　

What was he researching all day last Sunday?　　

My brother fell while he was riding his bicycle and hurt himself.　　

It was raining when they left the station.　　

When I got to the top of the mountain,the sun was shining.　　

What was she doing at nine o"clock yesterday?　　

When I saw him he was decorating his room.　　

While he was waiting for the bus,he was reading a newspaper.　

He was cleaning his car while I was cooking.What were you doing at 8:30 last night?

He was always changing his mind During that time he was going with us