We use shall in questions when we offer to do something.
Shall I help you with your luggage?
Shall I open the window?
When we make suggestions.
I don’t feel like cooking. Shall we eat out tonight?
I’m tired. Shall we take a taxi home?
When we ask for suggestions.
What time shall I call you?
Where shall I put this tray?
We use will in questions when we want to make a request.
Will you help me with the washing-up?|
Will you post this letter for me?