Was Mary having breakfast when you rang her up? ( to wash up ) Переделать отрицательную форму

Was Mary having breakfast when you rang her up?

Wasn’t Mary having breakfast when you rang her up?

Mary was not having breakfast when you rang up.

Was Mary washing up when you rang her up?

Wasn’t Mary washing up when you rang her up?

Mary was not washing up when you rang her up.

Who was having breakfast when you rang her up?

Who was washing up when you rang her up?

When was Mary having breakfast?

When was Mary washing up?

Was Mary having breakfast or having supper when you rang her up?

 Was Mary washing up when you rang her or him up?