Ответ:
1. She said she has bought a car.
2. She said he was dancing.
3. She asked when he would arrive
4. She asked if they were sleeping
5. She said they played football
6. She said they had played football the day before.
7. She told me to turn on the light
8. They said they would help me.
Объяснение:
Время на шаг назад. Present simple-past simple. В вопросах прямой порядок слов. Вопросительные слова заменяются на if. Повеления и указы через инфинитив.