In my ears, "Just don't give up, I'm working it out, please don't give in..." Infront of me, "Y=C+I+G+(X-M)" Lol. 
Jintheng
says
u study econ?
yup
Jintheng
says
C+I+G~lol
that 1 3 sektor only. lol
Jintheng
says
haah urs 4 sektor d
yea..i know.