There's a Facebook post going viral on the internet right now about common grammatical errors people make every day.

Some of them are understandable, others are painful. There are certain phrases that you should definitely know if you've graduated high school and/or college. Hearing these uttered incorrectly on the street is comparable to nails on a chalk board. Some of them are just common sense, though, so it's unsettling to discover how many people don't know any better.

Take the quiz below to test your grammar knowledge and see where you fall.

Source: Facebook