Помогите. Не понимаю как делать

While it was starting to rain, she was waiting the taxi.
и так со всеми, только глаголы заменяешь и добавляешь was и ing-овое окончание.

1. It started to rain while she was waiting for the taxi.
2. The lights went out while they were having dinner.
3. He saw the accident while he was walking home.
4. The phone rang while she was reading the newspaper.
5. The car broke down while he was driving home from Nice.