单选题Beijing  ______for hosting&nbs

问题补充：

单选题Beijing,______forhostingtheOlympicGames,____itsfirstloop(圈)ofgreenbeltaroundthedowntown,____anareaof102.3squarekilometers,inthepastthreeyears.A.prepared; built; coveredB.preparing; built; and coveredC.which prepares; building; coversD.preparing; built; covering

答案：

D解析本题易误选A，B。preparing for作状语；built为谓语动词；covering an area of 102.3 square kilometers作green belt的定语。