Exam is Coming !

I know , exam is coming and I still playing computer is a wrong thing.
I know I should pay more attention to my studies.

Can somebody help me to understand what is talking about the chemistry?
I study it hardly but I still cannot understand.
I know the facts ,but I don't know how to answer the question.
Someone said that chemistry is not just involved memorizing but understanding .
So ,what ?
I still can't answer the paper with all the answers are correct.

I know ,exam is near.



Hey , buddies !
Let us fight until the end !



Hope can get all apples back!