根据句意及首字母（汉语）提示，补全单词
1. My little brother is an e_________ boy. He can do a lot of things without having a rest for many hours.
2. You can't take these books out of the reading room without the teacher's p_________.
3. Zhang Jian is outgoing. He has a large _________(圈子) of friends.
4. Although the computer has a lot of advantages, it can't do _________(创造性的) job.
5. _________(打扰) others suddenly when they are talking is very rude.