Задайте общий, альтернативный, специальный, разделительный вопрос к подлежащему используя это предложение

my mother was cooking breakfast at six o'clock yesterday

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

2) Was my mother OR my father cooking breakfast at six o'clock yesterday?

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

3) Who was cooking breakfast at six o'clock yesterday

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

4) My mother was cooking breakfast at six o'clock yesterday, was not she?