Multiple choice general knowledge foreign languages Which of the following is grammatically incorrect? This is where I'm working right now. This is what I'm at right now. This is where I am right now. That is where I'm working right now. Reveal answer Fill a bubble to check yourself B Correct answer Explanation Where is a relative adverb used for locations, but what cannot function as a locative adverb. The phrase what I'm at attempts to use what as a locative, which is grammatically invalid. The correct form would be where I'm at or where I am.