0 used to ask for information about something -- qué
What’s this?
What time is it?
1 used when you have not heard what someone has said and you want them to repeat it -- qué
3 used to ask what someone wants when they call you -- qué
‘Jenny?’ ‘Yes, what?’
4 used to suggest something -- ¿y si…?
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Podemos completarlo paso a paso, por muy largo que sea el camino, y no se puede completar, por corto que sea el camino, si ni siquiera marcas tu huella.