• Past Simple глагола to be (was, were)
• вопрос со словом Who
• Past Continuous (прошедшее продолженное)
Who was that man you were talking to?
That was my brother Lou.
Who was that woman he was sitting with?
That was his girlfriend Sue.
Who were those people you were waving to?
Those were my friends from Maine.
Who was that woman you were talking to?
That was my student from Spain.