Помогите составить вопросительные предложения My younger brother tries to build a ship model.

Does my younger brother try to build a ship model?
Who tries to build a ship model?
Whose brother tries to build a ship model?
What does my younger brother do?
What does my younger brother try to do?
What does my younger brother try to build?
What model does my younger brother try to build?
Does my younger brother try to build a ship model or a car model?
My younger brother tries to build a ship model, doesn`t he?