1 general:: Phrase(s): Who was it? Who called on the telephone or who was at the door? (Assumes that the caller is not waiting on the telephone or at the door.) • Sue (as Mary hangs up the telephone): Who was it? Mary: None of your business. • Bill (as he leaves the door): What a pest! Sue: Who was it? Bill: Some silly survey.
McGrawhill's American Idioms And Phrasal Verbs