3. Assinale a alternativa que completa corretamente a lacuna __ at a party last night. a) I was at a party last night b) I were at a party last night c) I be at a party last night d) I will at a party last night

alternativa correta é a letra a) "I was at a party last night". A frase completa seria: "I was at a party last night." Isso indica que a pessoa estava em uma festa ontem à noite. As outras alternativas estão gramaticalmente incorretas.