Fill in: was, wasn't, were or weren't.

1. A: Where were you last night, Mark?
B: I wasn't at the cinema with Peter.
2. A: Annie was at school yesterday.
B: Yes, I know. She was sick.
3. A: Were the children at home yesterday morning?
B: No, they weren't. They were at the zoo.
4. A: Were you and Sophie at the mall yesterday morning?
B: Yes. We were in Jenny's clothes shop because there was a sale on.