GMAT Sentence Corrections Complete GMAT Sentence Correction Rules Dangling modifiers, the GMAT, and the dangers of over-complication GMAT Sentence Correction Cheat Sheet “Which” vs. “that” and the GMAT, simplified How to use “which” on the GMAT® GMAT Idiom List Parallel structure with “that” – a GMAT favorite GMAT idioms that aren’t GMAT idioms that aren’t