Nuclear radiation is said __________ the biggest health challenge in Japanese Earthquake over the past few months.
Please go ___the ship quickly. There is only 10 minutes left.
When his novel finally ____, it took the world by surprise.
To my ___, the short story has a lot of _____.
After a 68-hour flight in the Shenzhou VII spaceship, three astronauts Zhai zhigang, Liu Boming and Jing Haipeng returned to the earth _____.
They ___classes when the earthquake happened.