1. Had you already finished washing up when your parents came back home?
2. I had been expecting my exam result for the last week.
3. By the time Mr. Brown retired he had been working as a postman for forty years.
4. Jill wasn't at home. She had gone out with her friends.
5. Andrew was wet. He had been walking in the rain.
6. He had been working on the computer for an hour before she came to help him.