I the piano for two years.A. have boughtB. will buyC. am buyingD. have had

问题补充：

I the piano for two years.

A. have bought

B. will buy

C. am buying

D. have had

答案：

A. have bought

B. will buy

C. am buying

(答案→)D. have had

解析：本题的含义是我已经买了钢琴有两年了，根据句意应该用完成时态，故不选BC，buy为短暂动词，不和时间长度连用，故不选A，只能选D。