you ask your friends permission to bite a piece of cake

please can I ask for a piece of yours?

Jawaban :
--Modal May to Ask Permission-
You : Hey, may I bite a piece of your cake, please?
Your friends : It's OK. Here you go.

2) Excuse me, may I sit next to you?
3) Hey, may I borrow yoir watch for a while?
4) Sir, may I go to the toilet?
5) May I open the door please?

Semoga membantu^^