1. When the fireman arrived, we had already put the fire out.
2. When the manager came back, Jim had already finished the work.
3. When Philip telephoned, I had already gone to bed.
4. When their children came home, Alice and Jack had already had lunch.
5. When his wife got home from work, Jan had already prepared the supper.
6. The thieves had already spent the money when the police caught them.