问题补充：
— Oh, Miss Wei. Your skirt looks nice. Is it new?
— No, I it since three years ago.
A. had
B. bought
C. have had
D. have bought
答案：
A. had
B. bought
(答案→)C. have had
D. have bought
解析：考查时态。根据时间状语since three years ago，可知句子要用现在完成时态，排除A,B；且buy是短暂性动词，不能和一段时间连用，所以选C。
