"Presentation" & "Exam"

when we saw "presentation" this word, some students will panic and nervous. "Exam" this word more scary in student's life... A group name Infinity, they trying the best to do well in the presentation but finally they consider failed... this experience make everyone moody and sad. If the time can return back, than every things will be very good and perfect. the next part will talk about exam!! only can use one word to describe "useless". the main reason is just a simple question but cannot answer. really fuckdup...and so disappointed !!!!