问题补充：
---Oh, Mrs. King, your dress looks nice. Is it new?
---No, I it since two 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：由since引导的时间状语从句或短语，主句用完成时，结构为have或has+过去
分词，同时一般不用短暂动词，buy为短暂动词，故选C。
