Countdown timer expiring...

The countdown timer to the end of the O levels is expiring in less than 20 hours.
Soon, it'll be the end of my Secondary school life. Chemistry, being the last paper, is also the toughest subject to me.
I hope I'll do well for the exams on the whole, else my four years in secondary school will all be down the drain.
I'll have to go catch some sleep and prepare for the *final* exam paper tomorrow.

Good luck guys! :)