In a conversation between two people about football, one person asks,
"Who was playing?".
The other person informs that this question is incorrrect as it is common knowledge that it takes two to play the game of football. It was identified that the first person could have asked:
"Which teams were playing?".
Though both questions are grammatically correct; was it improper to ask "Who was playing?"
If so, please explain.
If not, please explain.
To a group of friends - "Who's coming to the movies tonight?"
About the movie - "Who's in it?"
Yes, you could ask, "Which of you are coming to the movies tonight?"; "Which actors and actresses are in it?" But, at least where I come from, we don't.