Because your sleepy :D
Try your best to concentrate and go to bed earlier
concentrate hard...
The cast of Hard to Concentrate - 2012 includes: Jess Neuhauser as Jess
He finds it hard to concentrate in class.I will concentrate on my work.This orange juice is from concentrate.
: my guess would be to concentrate really hard. (unless you dont have the attention span): i dont even know if you can!!!: concentrate hard.
if you concentrate and study hard and not get destracted then yes
not if you have good insparation and concentrate
No, it's hard to concentrate and hard to write while the bus is moving
concentrate hard...
They don't help you concentrate necessarily, but they do teach you to work hard and meet your deadlines better.
its actually not really hard. all you have to do is just concentrate and make sure you know what you are doing when you work.but school is hard!!!
I think it could cause insomnia, whenever I drink at night orange juice I find it hard to fall asleep