GMAT Sentence Correction (SC) | Re: Displays of the aurora borealis, or "northern lights"

For all those friends who are yet to take the test first time, SC on real GMAT is going to be much more difficult than that you would expect. I agree trying to understand what kind of questions are continuously going wrong is a good practice but I would not recommend you to concentrate more on that pattern of questions. Strictly following the grammar rules, understanding the right meaning of the question and, most importantly, managing the alloted time to a question decide how well one can perform
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