Вам даны несколько утвердительных предложений. образуйте отрицательные предложения от каждого утвердительного. задайте все возможные вопросы к каждому утвердительному предложению: my mum has opened the window. we have finished the work. somebody has just left the room.

My mum hasn't opened the window.We haven't finished the work. Nobody has just left the room.
What my mum has opened? Who opened the? window.
What we have finished? Who finished the work?
Anybody just left the room?