1. I knew her immediately because my brother had described her to me very well. 2. The militiaman stopped her because she had crossed the street in the wrong place. 3. I was not hungry because I had had lunch just an hour before. 4. Nobody knew when he came in because he had entered the house through the back door. 5. I thought he knew English well because he had lived in England for some years. 6. It happened to him because he had always been too sure of himself.