A:What did you do last night,Sarah?
B:I went to the cinema with my friends.
A:What was your school like twenty years ago,Dad?
B:There was only one building in my school. And there was no gym.
A:Did you play computer games yesterday?
B:No,I had a cold and slept all day.
A:That's too bad!
I to the park .
now, then, is, was, are, were