问题补充：
---Hello, may I speak to Millie?
---Sorry, she isn’t in. She Nanjing.
A. have gone to
B. has been to
C. has gone to
D. has gone
答案：
A. have gone to
B. has been to
(答案→)C. has gone to
D. has gone
解析：本题的含义是她不在家，她去了南京，表示某人去了某地，但不在此处通常用have或has gone to，本题主语是第三人称单数she，故用has，故选C。
