一、 单项选择 （共10小题，每小题1分，满分10分）
1. --- _______ did your uncle leave for the capital of Denmark?
--- Let me see. He _____ for nearly 20 months.
A. When; has left B. When; has been away
C. How long; has left D. How long; has been away
2. --- Lucy, do you have any plans to spend your ______.
--- Maybe I will go to Shenzhen. I have never visited _____ city.
