1. Zhu used to be shy, but now he is o______.
2. I don't like making speeches. I feel n______ talking in front of many people.
3. When I began to sing，he laughed and made me very ______ (尴尬的).
4. After a long trip to Europe, I felt very ______(精疲力竭的).
5. Last night a friend of mine invited me to a ______ party (化装舞会).