Написать 2 предложения в отрицательном и вопросительном в past continuous 1) my cat was sleeping white my dog was biting his tail 2) they were dancing on the desks when the teacher came in

Отрицательном
1) My cat was not sleeping while my dog was biting his tail.
2) They were not dancing on the desks when the teacher came in.
вопросительном
1) Was my cat sleeping while my dog was biting his tail?
2) Were they dancing on the desks when the teacher came in?