Answer: Enjoy the day with your family or friends, celebrate with them in the restaurant's, mall, park, etc.
Answer: Acknowledge your pain. First, know that your grief is normal. The pain from a breakup of a deep friendship is as real and valid as any other. You and your friend probably shared almost everything and spent practically all your time together. You talked on the phone for hours on end, and shared endless texts and messages. And now it’s all gone. That loss of intimacy and connection is real. It’s valid. And it hurts: please don’t try to tell yourself it’s nothing, because it really is something.
Answer: You can watch some Historical TV shows, Netflix, Kdrama, etc.
Answer: Why not, If you have much time to study or do your school work's do it. If you have time to study do it because it can give you more information if you don't know the question(s).
I don't know what you mean by expected but i guess its bad and good grade.
Answer:
I will tell it to my parents. I will study hard and im going to focus on my studies so i can have a good/high grades, and make my parents more proud of me.
I'm going to tell it to my parents that i got a good grades and i will continue to focus on my studies so i can have a good grades as always.
Stay safe!!