Leaving school

I got up early as usual,It's an ordinary day in my mind.
But suddently,I realised that my college life has ended already,yeah,my college has ended from now on,but I still throught myself in my old college days.
Now,all my classmates are talking about our future,our life,our pure love,with a touch of sadness,until today did I realise they are all so lovely.
My papers haven't started yet,nor do I konw how to begin,Leaving it alone,I think of a word in my Englishbook:Who knows,and who cares.