根据句意及首字母（汉语）提示，补全单词。
1. Perhaps he'll dress himself up as a clown in the c           party.
2. You must be e_____ after swimming for a long time.  Come and have a rest.
3. His witness was so c_____ that the jury believed him at last.
4. The news has caused a         (惊慌)among the bus-drivers.
5. Bad luck! I missed the early bus because I            (睡过头) this morning.