When are you going to school _ ( ? / . )
When are you going to school?
Who is this_ ( ? / . )
Who is this?
I live in a big city_ ( ? / . )
I live in a big city.
What time is it _ ( ? / . )
What time is it?
The classroom is big_ ( ? / . )
The classroom is big.
You have a brother_ ( ? / . )
You have a brother.
Where are you going _ ( ? / . )
Where are you going?
I'm 6 years old _ ( ? / . )
I'm 6 years old.