Write a question to this answer: Los lápices son de Álex.
It's not: ¿De quiénes son los lápices? or ¿De quiénes son? It came out incorrect on my on my online HW & quién has to be included in the question, since it's the root of the lesson. Impossible huh? Any geniuses here?
3 Answers
I'm not a genius but since Alex is singular I would say "¿De quién son los lápices?"
De quién son los lápices? o si ya mencionaste a los lápices, podés pregutar: De quién son? Bye
Maybe de quienes son los?