1. More than 1,000 people lost their ______(生命) in the accident.
2. You should go to see the ______(牙医) as soon as possible.
3. My brother likes Jay very much, he is a ______(超级的) fans.
4. He devoted himself to the ______(发展) of his research.
5. Many people came to New Zealand from Britain in the 19th ______(世纪).