“Was” questions are a type of grammatical construction in the English language known as the past simple tense, that are used to ask about something that happened in the past. They are formed by using the past simple form of the verb “to be” (was) and adding the subject of the sentence. For example: “Was it cold yesterday?”, “Was he at the party?”, “Was she a teacher?”. These questions are asking about something that happened in the past and can be answered with a statement in the past simple. The past simple form of “to be” is “was” for singular subjects and “were” for plural subjects.