_______atallisworthdoingwell.
A
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Toaworker,________fromthepointofviewofsocietyisnecessarylaborisfromhisownpointofviewvoluntaryplay.
Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.
_______atallisworthdoingwell.