обязательно кому-либо нужно делать что-либо?(While usually the question means "is it impossible for someone to do something", it can also mean "is it possible for someone not to do something", and this meaning will generally be expressed by a strong stress on not, and probably a break before it • Can you not tell that we have the plague? – Обязательно нужно трезвонить, что мы заражены чумой?stackexchange.comAbysslooker)