make many demands on

:  behave, act

:  to begin or seem to begin (an action)

:  to cause to happen to or be experienced by someone

:  the manner or style in which a thing is constructed

:  brand

:  the physical, mental, or moral constitution of a person

:  consisting of or amounting to a large but indefinite number

:  being one of a large but indefinite number

:  a large number of persons or things

:  a large but indefinite number

:  the great majority of people

:  an act of demanding or asking especially with authority

:  something claimed as due or owed

:  question

:  to call for something in an authoritative way :  to make a demand :  ask

:  to ask or call for with authority :  claim as due or just

:  to call for urgently, imperiously, or insistently