Ответ:

2. the animals weren't hungry at the zoo yesterday

3. my parents weren't at the theater last week

4. our class wasn't at the sports center 5 hours ago

5. we weren't cold at the cinema yesterday

6. my friends weren't in the cafe at the last lesson

7. i wasn't at school eight years ago

8. bill and peter weren't scared last tuesday

9. boys weren't in the river fifteen minutes ago

10. my class wasn't on an excursion yesterday