2 Who was reading a book when a burglar broke the window?
3 Holmes was playing the violin when a burglar broke into the house.
4 While Mrs Smith was sweeping the floor she was listening to the radio.
5 Who was reading a book when Holmes shouted “Help!”?
6 Mrs Smith was cleaning the house when the baker knocked at the door.
7 While the dog was chasing the cat,Mrs Smith was sweeping the floor.