{{B}}quEstions 15-18{{/B}}

A、to gEt ConsEnt From thEir pArEnts.
B、to prEpArE rings For ExChAngE.
C、to BE oF lEgAl AgE AnD to mEEt CErtAin mEDiCAl rEquirEmEnts.
D、to sEnD out AnnounCEmEnts AnD invitAtions.