1. At 9 pm last night I was reading. 2. Which CD were you listening to? 3. He was writing a novel. 4. Were you tidying your room at 8:15 this morning? 5. I was waiting for the bus; it was a taxi. 6. They were sitting in the room. 7. Which chair were you sleeping in? 8. My baby brother was crying because he was very tired.