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.
#98188
A
prepared; built; covered
B
preparing; built; and covered
C
which prepares; building; covers
D
preparing; built; covering
推荐题目
The old teacher lay wide awake on his bed, ___________ all the problems he had to deal with the next day. 
#95385
A
thought about
B
to think about
C
thinking about
D
having thought about
Charles Babbage is generally considered ________ the first computer. 
#98776
A
to invent
B
inventing
C
to have invented
D
having invented
_________ after a long walk, Kate called and said she couldn't come to the party. 
#90051
A
Worn out
B
Having worn out
C
To be worn out
D
To wear out