(3)
a) She made a terrible mistake.
She didn't make a terrible mistake.
Did she made a terrible mistake?
b) I played the piano.
I didn't play the piano.
Did I played the piano?
c) They stayed at home.
They didn't stay at home.
Did they stayed at home?
(4)
a) He was spending time with his friends.
He wasn't spending time with his friends.
Was he spending time with his friends?
b) I was cleaning my room.
I wasn't cleaning my room.
Was I cleaning my room?
c) They were playing computer games.
They weren't playing computer games.
Were they playing computer games?
