Hi Hamdakreza,
Many GMATers spend 3 months (or more) of consistent study time before they hit their 'peak' scores, so if you have studied for just 1.5 months, then it's likely that you just have not put in enough time and effort to score higher yet. In addition, many GMATers face pacing issues in the Quant section, the Verbal section or both – so you are not alone. However, it's important to remember that pacing problems do NOT exist on their own - they're the results of OTHER problems. You might naturally improve in all of these areas over time - but you clearly have to work on a number of different Verbal skills before you will be able to consistently score 700+.
Before I can offer you any additional advice for your studies (whether you ultimately switch to the GRE or stay with the GMAT), it would help if you could provide a bit more information on how you've been studying and your goals:
1) How many hours do you typically study each week?
2) What study materials have you used so far?
3) Have you taken just this one CAT/mock? What “brands” of CATs/mocks have you used? On what dates (or approximate dates) did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
4) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich
Contact Rich at: Rich.C@empowergmat.com