1.Sara cut her finger when she was cooking lunch.
2.Rob was watching TV when he heard a knock on the door.
3.Margaret was sleeping when her older sister returned.
4.We were decorating room when she was writing invitations.
5.Vendi was walking in the park when she met Peter.
6.We were gathering mushrooms when there was a storm.
7.When we were fishing they were collecting firewood for the fire.
8.When they were playing tennis I was look through newspaper.
9.I heard this news when I was driving by car to Oxford.
10.Billy was washing the car when his brother rang.
11.At first she drew the curtains , and then turned on the light.