With a lot of difficulties ___, they went to the seashore and had a good rest.
| A．settled | B．settling | C．to settle | D．being settled |
If we do not deal with ________ problem caused by air pollution, our planet may no longer be ________ healthy place for us.
| A．a; the | B．a; a |
| C．the; a | D．the; the |
Xi'an，________ city of natural beauty will host ________International Horticultural (园艺) Exposition in 2011.
| A．a; the | B．an; a |
| C．the; a | D．an; a |
As is known to all, ________ opening ceremony of the 16th Asian Games held on November 12th in Guangzhou was ________ great success.
| A．不填；a | B．the; a |
| C．the; 不填 | D．a; 不填 |
It's ________ good feeling for people to admire the Shanghai World Expo that gives them ________ pleasure.
| A．不填；a | B．a; 不填 |
| C．the; a | D．a; the |
It was ________ very rare find and the archaeologist who made ________ discovery said it was like unearthly a Mona Lisa.
| A．a; the | B．the; the |
| C．the; a | D．a; a |