We many roses in the garden since last year.A. plantB. plantedC. have plantedD. are plant

问题补充：

We many roses in the garden since last year.

A. plant

B. planted

C. have planted

D. are planting

答案：

A. plant

B. planted

(答案→)C. have planted

D. are planting

解析：句意：自从去年以来，我们在花园里面种了许多玫瑰花。结合语境可知本句描述的是从过去一直持续到现在的动作，故用现在完成时态，选C。