We asked admissions officers at 18 colleges for their grammatical pet peeves. Make sure your college essay is free of these errors by sharing this list with your proofreader. We also offer proofreading help through our awesome tutors! Confusing its & it's; your & you're; or there, their & they're Run on sentences & fragments​​ Verb/noun agreement and verb tense Singular articles before plural nouns like “an alumni” Misusing “me” and “I” Split infinitives Ending a sentence wit