GMAT verbal

Hi…

I have completed my masters from USA and right now working in chemical company in India. I want to MBA but my verbal is very bad…infact my english is very bad :frowning:
I got only 370 in first mock test and I have only 3 months for test. Could you please suggest me, that what I should do to improve my verbal score not for only GMAT but for life long ??? I want 700 + score… :frowning:

Thank You.