It generally depends on the teacher you're working with. But to be on the safe side, I'd incorporate your first and last name, the date the assignment was finished on, which assignment it was, and your teachers name. Anything else like lesson number and school name can be left out, but you might want to annalyse it before forgetting, or adding it in.
Answer: Buenas días director.¿Cómo está usted?
Buenos tardes amigo mejor. ¿Cómo estás?
Buenos noches hermano y hermana. ¿Cómo estás?
Buenos días abuelo. ¿Cómo está usted?
Weno, yo pienso que es "vamos" I think its "vamos" hope this helps
