Question

I pray to god I pass this class

Answer 1

It seems to be letter "D"

Answer 2

Try Hard, Work Hard, and You'll Make It! 
To help u study, Listen to this, It really worked for me! It may be strange at first, but once u get used to it, Ir'll help alot with concentration. 
Good Luck! 
Puffin 
https://www.youtube.com/watch?v=uX6usZWiMAo&list=RDuX6usZWiMAo&index=1