Ответ:

A: Was Peter here?

B: Yes, he was .

Were John and Derek teachers?

B: No, they weren`t. They were doctors .

Was Charlie Chaplin an actor?

Yes, he  was.

Were Marlon Brandon and James  Dean singers?

No, they weren`t. They were famous  actors .
A: Where were  you yesterday  afternoon?

B: I was  at the cinema.

A: Was Alexander Graham Bell  a director?

B: No, he wasn`t. He was an inventor.