Question

るん

どれが入るか分かりません

Little
19. It was not (
Duntil
Unless
) I quit smoking that I realized the danger of passive smoking.
3when
so
and (
).
4that
WW

Answer 1

✨ คำตอบที่ดีที่สุด ✨

れ な

①です
It was not until ～ that … .「～してはじめて…。」