Respostas
Resposta:
Negative: He wasn't (ou was not) playing guitar.
Interrogative: Was he playing guitar ?
Affirmative: They were working last night.
Interrogative: Were they working last night ?
Affirmative: We were sleeping.
Negative: We weren't (ou were not) sleeping.
Negative: She wasn't (ou was not) smiling.
Interrogative: Was she smiling ?
Affirmative: My friends were reading a book.
Negative: My friends weren't (ou were not) reading a book.
Interrogative: Were my friends reading a book ?
Explicação:
Was e were são as flexões do verbo to be no passado. A flexão was é usada com os pronomes I (eu), he (ele), she (ela), it (utilizado para fazer referência a pessoas, animais, lugares e/ou objetos). Já a flexão were é usada com os pronomes you (você), we (nós), you (vocês) e they (eles/elas).
Resposta:
Affirmative
They were working the last night
We were sleeping
eu não sei a dos amigos
Negativa
He wasn't playing guitar
We were not sleping
She wasn't smiling
Interrogative
Was he playing guitar
Were they working the last night
Was she smiling
Were my friends reading a book
Acho que está tudo certo, espero ter ajudado