1 - were, 2 - were, 3 - were, 4 - was, 5 - was, 6 - were, 7 - weren’t, 8 - was, 9 - wasn’t, 10 - was.

Ответ:

1. were

2. were

3. were

4. was

5. was

6. were

7. weren’t

8. was

9. wasn’t

10. was

Объяснение:

Все очень просто. Глагол to be в прошедшем времени имеет для всех лиц в единственном числе форму was (в отрицательных предложениях was not или сокр. wasn’t), для всех лиц во множественном числе форму were ( в отрицательных предложениях were not или  weren’t ).