Hold on—Wait a minute … Oh, we have an important announcement: it's National Punctuation Day! Knowing the purpose of every punctuation mark is crucial; being error-free in writing is the best recommendation.

Though punctuation is small, it leaves a big impression. Check up on your grammar habits and make sure you're writing correctly—in this case, specifically with the comma and apostrophe.

Working in marketing for the AEC industry, you have undoubtedly been confronted by – or are yourself considered – the grammar police. (You know who you are.) Want to avoid that embarrassing moment when one of your colleagues catches a subject-verb agreement error or a sentence fragment?