Hi ksaidivya,
Since it's been over a year since Garv posted, it's possible that he's moved on (and won't be responding). There are plenty of Experts and Users here who can offer you advice on how to improve in the Verbal section though.
I'd like to know a bit more about the work that you've done so far:
1) How long have you studied?
2) What materials have you been using?
3) Did you score V15 on a CAT or on the Official GMAT?
4) Do you have trouble finishing the Verbal section on time (and do you have to guess on a bunch of questions just to finish)?
GMAT assassins aren't born, they're made,
Rich