1. My sister was cooking something delicious when the electricity went off.
2. I was swimming all day yesterday.
3. They were smoking during the break.
4. Mary was red in the face because the children were laughing at her.
5. My brother was riding his bike all afternoon.
6. Susan was talking to her teacher when I got to school.
7. Mark and Tim were playing basketball a lot when they were in New York.
8. John was painting my portrait all the morning.
9. At eight o’clock yesterday evening I was eating a delicious cake.
10. Brad was trying to solve his problems with help from his brother.