Read the following dialogue and answer the question.

Lany: Dad, I don't think I want to finish my education.

Dad: Pardon? It is your second year already.

Lany: I know you must be shocked. But, I have been thinking about it for quite a while. I have (1) ... decided to quit college.

Dad: (2) ... you gone insane? You're throwing away your future.

Lany: Don't worry, Dad. I've got a job. It's hard, and I am really sorry.

Dad: Please rethink about it. Go home safely. I am waiting.

Lany: Dad, please don't be angry. I am doing this with many considerations. It's not that I want to make you disappointed, but this thought has kept haunting me every time I am entering a class. I have been trying to figure out what makes me this way.

Dad: Let us talk later.

The best auxiliary verb to fill in the blank number 2 is ....