Ай ай!Времена надо запоминать.She saw an accident while she was waiting for the bus

2. My mum was waiting for me when I got home. 3. She saw an accident while she was waiting for the bus. 4. He was walking in the park when he had an idea for a novel. 5. They heard a knock on the door while they were watching TV. 6. We weren't listening when the teacher gave the answer. 7. They were dancing when he stood on her toe!