根据首字母或汉语提示写出单词
1. His son is c_____ endless problems and he's close to the end of his rope.
2. The earthquake caused great d_____ to people of Wenchuan.
3. It takes a lot of time and e______ to get an exhibition ready.
4. The company is run by a group of _____ (主任).
5. No one knows whether Mr. Li lives on the _____ (八) floor of this building.
