英语选择
Startedin1970,EarthDayhasbecomeanannualinternationalevent____concernsaboutenvironmentissuessuchaspollution.
A.dedicatedtoraisingB.dedicatedraising
C.dedicatestoraiseD.thatdedicatestoraising
应该选什么?那个to是不是介词?顺便给翻译下,