根据句意及首字母提示完成句子。
1. Don't take other's things without p _______.
2. Lynn isn't afraid to speak in public. She is very_______.
3. E_______ people are hardly ever tired.
4. Our teacher i_______ a new student to us yesterday.
5. Don't make noise in p _______.
1. permission 2. confident 3. Energetic 4. introduced 5. public