TensofthousandsofpeoplemarchedtotheMartinLutherKingJr．M...
問題詳情：TensofthousandsofpeoplemarchedtotheMartinLutherKingJr．Memorial,celebratingthe50thanniversaryofKing'sfamousspeech,throughwhichweknow_____hesaidmeanttotheblack．A．thatwhat B．w...