Toaworker,________fromthepointofviewofsocietyisnecessarylaborisfromhisownpointofviewvoluntaryplay.
A
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。
名词解释：offer
Iwouldlove________tothepartylastnightbutIhadtoworkextrahourstofinishareport.
Thetrafficwasheldupformorethanthirtyminutes,________causedmetoarrivelate.
名词解释：copyright
名词解释：silentpartnership