Как задать вопрос к предложению

my brother and i want to go to the stadium

Смотря какой вопрос Вам нужен. Все варианты:

1. Who want yo go to the stadium?

2. What do your brother and you want?

3. Your brother and you want to go to the stadium, don't you?

4. Do your brother and you want to go to the stadium or to the cinema?

Did my brother and I want to go to the stadium?