For example, if the complete phrase is:
* "Que je peux aller aux toilettes?" (Can I go to the bathroom?) - You would answer "Oui, bien sûr" (Yes, of course) or "Non, il faut attendre" (No, you need to wait).
* "Que je peux aller aux États-Unis?" (Can I go to the United States?) - You would answer "Oui, si vous avez un visa" (Yes, if you have a visa) or "Non, vous n'avez pas les papiers nécessaires" (No, you don't have the necessary documents).
Please provide the complete phrase so I can help you understand it and give you a suitable answer.