These translate as: What do you need for class? Wht is in your backpack? Who is your favorite teacher? Which class do you like? Do you like history class? What time is it? At which time is ____ class? What do you do in school? Do you like to study? Do you like to talk to your friends? Do you listen to music? Does your mother speak Spanish?
In talking to your friend, you would use “tu”. In talking to a doctor, you would use “usted”
I don't know the answers to the questions I translated, so I just left them for you to answer.
