By thE Following sEmEstEr, it is likEly thAt thE olD proFEssor ______ on thE CAmpus oFCAliForniA univErsity For two DECADEs.
A、will hAvE to BE tEAChing B、will hAvE BEEn tAught
C、will hAvE BEEn tEAChingD、will BE tEAChing