Las preguntas se pueden contestar con un 'yes' o 'no' pero para contestar de una manera como más formal, le añadaríamos el auxiliar, por ejemplo:
-Are you French?
No, I'm not French.
-Do you live in a house?
Yes, I live in a house.
Esas son las respuestas cortas.
La estructura es WH+Auxiliar+Pronombre+Verbo+complemento+?
*Where do you eat?
*Who are you?
*When does he sell a dress?
*What are you doing?
*Why does she do that?
*-*Preguntas y respuestas*-*
-What are you eating?
I'm eating a icecream.
-Where do you live?
I live near of a bank.
-Who is he?
He is Marco from Italia.
-Why does she wear in that way?
Because she likes it.
-When do you go to the beach?
I go when my mom lets me out.
ALGO IMPORTANTE es destacar que WHY SIEMPRE SE RESPONDE CON BECAUSE.
WHY do you write that poem?
BECAUSE I'm practising with my style.
Editado: 31.08.2020