They are organized by country, style and continent
The answer would be De la. I am not a native French speaker but in English the phrase translates from “Est-ce que tu veux de ia dessert?” To “Do you want dessert?”
Hier, je suis allé(e) au stade.
Verbe être = accord en genre et en nombre
allé = masculin/singulier
allée = féminin/singulier