{{B}}quEstions 15—18{{/B}}

A、thEy BuilD monumEnts.
B、thEy tEll storiEs From pArEnts to ChilDrEn.
C、thEy writE things Down.
D、thEy mAkE proFEssionAl historiAns pArt oF thEir govErnmEnts’ stAFFs.