一道定语从句题,求详解Whentheymetagain,thetwofriendstalkedaboutlotsofthingsandpersons
Whentheymetagain,thetwofriendstalkedaboutlotsofthingsandpersons_wecouldrememberintheschool.A.whoB.whomC.thatD.which选哪个?which还是that?为什么?