ПОМОГИТЕ ПОЖАЛУЙСТА АНГЛИЙСКИЙ ЯЗЫК. PAST SIMPLE И PAST CONTINIOUS
помогите выбраьь праильный вариант ответа с объяснением почему так?​

Ответ:

2. It was raining so we decided to stay at home.

3. While we were walking in the park, it started to rain.

4. I fell asleep while we were watching a film on TV.

5. He did not answer the phone because he was listening to music with headphones.

Объяснение: