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。
Imports will be allowed in proportion _______ exports.
—Youwerebraveenoughtoraiseobjectionsatthemeeting.
—Well,nowIregret________that.
The Roman goddess Venus is identified _______ the Greek goddess Aphrodite.
名词解释：abilloflading
_______atallisworthdoingwell.
