E-GMAT Verbal Review

I am a non native speaker & the first time I gave the gmat exam with minimal study I got V15.This was tooo low!
Next time I did SC,CR ,RC from the tutorials on EGMAT to receive a score of V30.This was with full time work and I did not get any time to revise the SC course.I am extending my E-gmat course and have given myself 40 days to improve my score from V30 to v40'S.According to my ESR report my weakness lies in the SC area and this is where I will put maximum effort.E-gmat has a very structured approach towards learning verbal and remembering RULES thus If you go through all their lessons and revise them before the exam V 35+ should not be a hard task.