¿Por qué no dice nada el señor Bueller cuando se da cuenta de que Victor
no habla francés?

Translated to english this is:

Why doesn't Mr. Bueller say anything when he realizes that Victor

don't speak french?

if you are wanting me to ask why in spanish, then

por qué

Explanation:

i would have to know what the audios say as well with the question. : /