Hi AmitLobo,
Part of your issue might be that you're thinking in terms of a "best answer", when the reality is that there is ONE correct answer and four incorrect ones. As such, if you've narrowed the answers down to two choices (the correct one and one of the incorrect ones), then you're almost to the solution - but there's still one more 'step.' If you cannot directly determine the correct answer, then you have to shift your thinking and define WHY the wrong answer is wrong. Sometimes the reason is obvious, but sometimes it's subtle. From what you've described, you haven't honed your skills enough to nail that last step, so we have to discuss how you're approaching Verbal questions.
1) How long have you studied?
2) What study materials have you used?
3) What "steps" do you go through when working on a typical SC, RC or CR prompt?
4) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores)?
5) What is your goal score?
GMAT assassins aren't born, they're made,
Rich