Day 58 - It's just its Possessive

I have not taught English for years, but there are certain grammatical errors that still make me cringe. One that I continually see is the
mis-use of its/it's. Here's a hint, if you care to use the apostrophe, what you mean to say is  it is. Without the apostrophe, it's just a possessive.
Another one that I see way too often these days is the mis-use of the preposition of.  For example, "he could of been a contender". Heads up folks, of is not a verb. You need to use could've, sounds the same, way different meaning. I recently found this mis-use not once but twice in our local paper. Groan! I guess once an English teacher, always an English teacher. I bet the folks who not only painted this sign, but thought it was fine to install, are a bit embarrassed, and I bet their English teacher is livid.