a confidential secretary的用法和样例：
- She is a confidential secretary of Mr. Smith.
- She is a confidential secretary.
- Since then, the Ministry in Kyrgyzstan as a confidential secretary, Colonel, General Staff and the military, the rank of Director of ordnance.
- She spoke in a confidential tone of voice.
- She became my confidential secretary.
- I have no confidential secretary.