1. We have done morning exercise. We haven't done morning exercise.
2. A big bee stung the boy. Did a big bee sting the boy?
3. My Granny buys milk every day. Does my Granny buy milk every day?
4. The family is decorating the room. The family is not decotating the room.
5. My sister will wash the dishes. Will my sister wash the dishes?
6. They were showing a very interesting film. They were not showing a very interesting film.
7. Masha opened the door. Mashs did not open the door.