Resposta :
A) was
B) were
C) was
Was se refere a uma pessoa no passado exemplos: Joana was at school - Marcos was reading a book
Were se refere a mais de uma pessoa no passado, exemplos: We were Friends - They were sleeping- Tom and Julie study at the same school
Resposta:
Letra B é a certa.
Explicação:
Para 3ª pessoa do singular utilizamos WAS e para as outras pessoas WERE. Logo:
Mary was
Daniel and Jonas were
The cat was.