Verbal from 37/38 to 41/42+

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I am a non-native speaker. I took the real GMAT couple of weeks earlier and received 37 in verbal. I think the score is kind of underestimated. Because of the urge to go to restroom, I could not focus on the second half of verbal. Anyway I think I am at 38/39 range. I need to get to 41/42 range to get the score that I wanted. My weakest part is SC. I already exhausted OG 10, 11, 12 and 13. What would you suggest me to do to get to 41/42+ range? If needed, I can invest 3 months just for SC. I really need to imporve my SC.

Should I redo OGs, read literature, read more grammer books, read forums post by instructors? I am confused on how to get myself into the next level on SC.

Thank you very much!

[Kasia@EconomistGMAT]

You could try to go through GMAT Verbal Review from Official Guide Series for extra practice. Grammar books only are not enough because many problems which are grammatically correct according to general usage of English are incorrect according to the GMAT.
Reading posts can also help you identify subjects in SC which you haven't mastered yet.

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Thanks Kasia for the response!

I already looked at the Verbal Review and question pack as well.

[bellcurve]

Thanks Kasia for the response!

I already looked at the Verbal Review and question pack as well.