问题
选择题
Beijing, ______for hosting the 2008 Olympic Games, ____its first loop (圈) of green belt around the downtown, ____an area of 102.3 square kilometers, in the past three years.
A．prepared; built; covered
B．preparing; built; and covered
C．which prepares; building; covers
D．preparing; built; covering
答案
答案：D
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。