1.He WAS WATCHING TV when the telephone RANG.
2.WAS CLEANING the house while he WAS WORKING in the garden.
3.When we FOUND the cat it WAS PLAYING under the bEd/
4.Joan WAS HAVING a shower when the window cleaner CAME.
5.Grandma WAS KNITTING while Granddad WAS SMOKING his pipe.
6.When I ARRIVED home, Father WAS PAINTING the front door/
7.Bob and Sally WERE WALKING when it STARTED to rain.
8.What WERE YOU TALKING about when I CAME in?
9.I WAS READING my newspaper when they KNOCKED at the door.
10.As Fiona WAS WASHING the glass,she CUT her finger.
11.Mother BROKE the vase while she WAS DUSTING it.
12.My brother WAS BUILDING a sandcastle while I _WAS SWIMMING in the sea.