1. Kevin had eaten all the pies before his parents arrived.

2. Jack was reading the book when the phone rang.

3. When David got home he discovered that somebody had broken into his flat.

4. I was late but my friends were waiting for me when I arrived.

5. When I got to the station, the bus had already left.

6. He was driving fast when the accident happened.

7. When they returned home, they told their mother that they had caught a lot of fish.

8. The boys broke a window when they were playing football.