Toaworker,________fromthepointofviewofsocietyisnecessarylaborisfromhisownpointofviewvoluntaryplay.
A
本題要求填入一個關系代詞引導主語從句，并在主語從句中作主語，所以選 what。
Thewoundedsoldierswouldrecoverquicklyiftheywerewell________.
Heboughtahouseforhischildren________
名詞解釋：privateinternationallaw
Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.
名詞解釋：abilloflading
