quEstions 19-22

A、to introDuCE thE womAn to somEonE who hAs rEsEArChED Blushing.
B、to illustrAtE thE BEnEFits oF A puBliC-spEAking ClAss.
C、to givE An ExAmplE oF somEonE who BlushEs EAsily.
D、to ExplAin A wAy to ovErComE Blushing.