A) Our bus arrived on time.
Our bus didnt arrive on time.
b) Sue phoned last night.
Sue didnt phone last night.
c) Maria finished work early yesterday.
Maria didnt finish work early yesterday.
d) The train stopped at Harry's station.
The train didnt stop at Harry's station.
e) I wanted to go to bed early.
I didnt want to go to bed early.
f) Carlos answered my letter.
Carlos didnt answer my letter.
g) John invited lots of people to his party.
John didnt invit lots of people to his party.
h) The shops opened on Sunday.
The shops didnt open on Sunday.
i) Peter liked his new shoes.
Peter didnt like his new shoes.