necessity

她工作并非出于经济上的必要性。

There's no financial ___necessity for her to work.

缝纫是我出于需要而做的事情，不是为了乐趣。

Sewing is something I do out of ___necessity, not for pleasure.

大多数人似乎认为汽车是必需品，而不是奢侈品。

Most people seem to consider a car a ___necessity, not a luxury.