To a worker, ________ from the point of view of society is necessary labor is from his own point of view voluntary play.
A、whatA
本题要求填入一个关系代词引导主语从句，并在主语从句中作主语，所以选what。
There are many sales this season, during which stores will lower their _______ prices.
名词解释：copyright
Itisobvioushowbadmovieswillimpact________children.
名词解释：privateinternationallaw
The French maintain a ________ separation of personal and professional life.
