1. The over 21 hours’ journey into space made Yang Liwei China’s first a__________.
2.Trembling with excitement, theyoung boy set out on his most a__________ journey, because he liked to visit new places.
3. People in that street were d_________ by the heavy truck traffic every night and they even could go to sleep.
4. He is a good manager who o_________ his workers’ time well and they speak highly of him.
5. Years of hard work made him a s__________ man.
6. We should make better use of the natural ________(财富).
