Hi ankitachauhan,
You've come to realize that there's a big difference between performing well on random sets of Verbal questions and performing well on a FULL-LENGTH adaptive CAT.
Before I can offer you the specific advice that you're looking for, I'd like to know a bit more about your studies so far and goals:
1) What is your goal score?
2) How long have you been studying?
3) How have you scored on each of your practice CATs (including the Quant and Verbal Scaled Scores)?
4) When are you planning to apply to Business School?
5) Do you know which Schools you plan to apply to?
GMAT assassins aren't born, they're made,
Rich