1. It was an evening. My mom was reading a book and I was writing a letter. Suddenly my mom's brother came in. We had been talking for about an hour when his wife rang and reminded him about the theater. 2. Nelly left the courthouse, got on the bus and went home. When she was near her house, Pitt was waiting for her. 3. What were you doing yesterday this time? - I was writing an essay in the library. I had been writing it for an hour when my friends came to the library. - When did you get home? - Late. 4. Who were you talking with yesterday when I met you on the street? - With a friend. He came home from Moscow two days ago. We had been talking for 15 minutes when you saw us yesterday.