Qual é a forma correta do verbo auxiliar "be" para a terceira pessoa do singular (he...

Alternativa A. As flexões do verbo to be para a terceira pessoa do singular he/she/it no passado simples são was/were.

Nas frases afirmativas: he was/she was/it was
Nas frases negativas: he was not / she was not / it was not ou he wasn't /she wasn't/ it wasn't
Nas frases interrogativas: was he/ was she /was it