6. Many types of animals have now________ (消失) from the earth. 7. Health is the most precious thing that we can_________(拥有) in the world. 8. A______(系列) of strange things happened to her recently. 9. It was so cloudy that the top of the mountain was_______(看不见的). 10. Dangerous driving should be severely_________(惩罚).
vanished
posssess
series
invisible
punished