59._________A.Unless B.OnceC.IfD.Although

59._________A. rulesB. proceduresC. regulationsD.

59._________A.. creativityB. reliabilityC. intell

59._________A. specialistB. assistantC. supporter

59._________A.. monumentsB. graveyardsC. tabletsD

59._________A.. anB. theC. aD. /

_________(59)A.unless B.ifC.as D.since