Identify the sentence using "who" incorrectly: He is the man who works in my office., The teacher who taught us English has retired., That's the boy who helped me., The girl with who I met is very kind.

Identify the sentence using "who" incorrectly: He is the man who works in my office., The teacher who taught us English has retired., That's the boy who helped me., The girl with who I met is very kind.

Explanation

The correct phrase should be: "The girl with whom I met is very kind."

"Whom" is used as the object of a preposition (like "with"), while "who" is used as a subject.