よく(も)
How the hell is it possible, that ...?
JLPT
N3
Structure
よく(も)
Meaning
Expresses feelings of annoyance, dissatisfaction, or surprise "why did you do that?" when someone does something unexpected, annoying, or terrible.
よくもまあ
、
あんな
嫌
らしい
物
が
食
べられるわ
。
Well, I can eat such disgusting food.
