Resposta :
Em ingles
(A) he was my dog.
(B) they were my friends.
(C) she was at home.
Em portugues
(A) ele era meu cão.
(B) eles eram meus amigos.
(C) ela estava em casa.
Resposta:
It was my dog
they were my friends
she was at home
Explicação:
o dog é um animal, então gramaticalmente precisa ser substituído pelo pronome it.