Задайте общий, альтернативный, специальный, разделительный вопрос к подлежащему используя это предложение my mother was cooking breakfast at six o'clock yesterday

Was my mother cooking breakfast at six o'clock yesterday?

Was my mother cooking breakfast at six or seven o'clock yesterday?

What was my mother doing at six o'clock yesterday?

My mother was cooking breakfast at six o'clock yesterday, wasn't she?

Who was cooking breakfast at six o'clock yesterday?