1). They didn't watch this TV programme last Monday. Did they watch this TV programme last Monday? What didn't they do last Monday?
2). They were not at that interesting exhibitioin last Saturday. Were they at that interesting exhibitioin last Saturday? Where weren't they last Saturday?
Did they watch this TV programme last Monday?
What didn't they do last Monday?
2). They were not at that interesting exhibitioin last Saturday.
Were they at that interesting exhibitioin last Saturday?
Where weren't they last Saturday?