В англ.языке в прошедшем времени to be употребляется как:
was - для местоимений един.числа. - я, она, он, это. (he, she, i)
were - для множ.числа - мы, они, дети, книги и т.д. а также вы и ты. (they, we, you)
1. was
2. were
3. was
4. was
5. were
6. was
7. was
8. were
9. was
10. was