Como te llamas would be the answer because your asking him whats his name directly, so therefore como te llamas would be correct.
Simply qué.
The translation: Fernardo told me that you had been shopping. What did you buy? Victor: I bought some jeans and trekking shoes.
*Así* is the correct way to write this word. *Hací* Is a barbarism and, therefore, it is convenient to avoid it.
Answer by JKismyhusbandbae: Porque interrumpen la armonía familiar.
Hope this helps~
