What is your idea about doing right and wrong things? Say what you must and mustn't do

I must eat soup and must not eat ice cream because my parents are do not разрешают перевод не знаю; ))

You must go ti school in your school uniform and mustn't go to school in fri form.
You must clean your hands befire you go to eat
You mustn't go for a walk after 10 p.m