I was having a shower so I didn't hear the phone.
We were walking in the mountains when we heard a piercing scream.
They were having so much fun at the party, they decided to stay.
When the teacher arrived, they were playing in the back of the classroom.
While I was having a drink in the cafe, I saw an accident outside.
What were you doing when the telephone rang?
Why were you running when I saw you the other day?
This time last week I was lying on the beach.
I was having a beautiful dream when the alarm went off.
When the teacher arrived all the students stood up.
He saw the accident while he was walking to work.
When the phone rang, I got up to answer it.