Question

I_______ the piano for two years.

1. A.
   have bought
2. B.
   will buy
3. C.
   am buying
4. D.
   have had

Answer 1

D
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。