Question

a) Escreva a frase abaixo na Forma Negativa:

He was working when she arrived.

b) Escreva a frase abaixo na Forma Interrogativa:

They were talking when you called.​

Answer 1

a) He wasn't working when she arrived

b) Were they talking when you called ?

// espero ter ajudado, vc pode usar wasn't ou was not para uma frase negativa no passado!! :)