Hi naveensomireddy,
Before I can offer any suggestions, I'd like to know a bit more about your studies so far and your overall timeline/goals:
1) How long have you been studying (and studying the Verbal)?
2) What resources have you been using?
3) Do you have trouble finishing the Verbal section on time (and do you have to guess on a bunch of questions just to finish?)?
4) When are you planning to apply to Business School? If it's soon, then what specific deadline(s) are you facing?
Thankfully, the GMAT Verbal section is just as predictable and standardized as the Quant section is, so you CAN train to score at a higher level. With a V18 though, you might need more than a month to hit your score goal.
GMAT assassins aren't born, they're made,
Rich