When he (to come) home, his little sister (to sleep) I ( to travel) round the world last year. When I (to clean) the

1. When he came home, his little sister was sleeping. 2. I travelled round the world last year. 3. When I was cleaning the room, I found my old toy. 4. When it started to rain, we were swimming in the river. 5. He was reading on the sofa when I saw him. 6. When the girl got up, her parents were drinking tea. 7. I looked out of the window and saw John who was standing under a tree waiting for me.