to become the duty or responsibility of sb :
With his partner away, all the work now fell to him.
[+ to inf]
It fell to me to inform her of her son's death.
to become the duty or responsibility of sb :
With his partner away, all the work now fell to him.
[+ to inf]
It fell to me to inform her of her son's death.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005