1. I did morning exercises. I didn't do morning exercises. Did I do morning exercises? 2. He worked at a factory. He didn't work at a factory. Did he work at a factory? 3. She slept after dinner. She didn't sleep after dinner. Did she sleep after dinner? 4. We worked part-time. We didn't work part-time. Did we work part-time? 5. They drank tea every day. They didn't drink tea every day. Did they drink tea every day? 6. Mike was a student. Mike wasn't a student. Was Mike a student? 7. Helen had a car. Helen didn't have a car. Did Helen have a car? 8. You were a good friend. You weren't a good friend. Were you a good friend? 9. You were good friends. You weren't good friends. Were you good friends? 10. It was difficult to remember everything. It wasn't difficult to remember everything.
