Small test tomorrow...

Tomorrow is chemist test le...
charm lo...
i know and i understand wat teacher explain...
but,unluckily i cant express well in the test...
Today i go to my teacher and ask for solution,
and she say,
u know where is ur mistake,
that is ady very good...
cause there r someone dont even know where is the problem occur,
she juz advise me to keep on practice and use more key word rather than juz build a sentences base on wat i understand without using the key word...
hmm..
look like i need to put more effort on this...