all day long, for a whole day

the whole day, all of the day

concentration

concentrate

a job; an occupation; work / job, work (task) / (physics) work, change of energy

to work

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

intensive