Помогите задать 5 любых вопросов к предложению

срочно плиз, плиз, плиз, плиз, очень срочно.

 

It`s much cooler indoor because are staying in a cave house.

1)Who is staying in the cave house?

2)Where are they staying?

3)Why is it cooler indoor?

4)Where is it cooler?

5)How is it indoor?