So far this year we a rapid rise in food prices by between 10 and 20 percentA. experienc

问题补充：

So far this year we a rapid rise in food prices by between 10 and 20 percent．

A. experience

B. had experienced

C. experienced

D. have experienced

答案：

A. experience

B. had experienced

C. experienced

(答案→)D. have experienced

解析：考查时态。根据句中时间状语so far到目前为止，故用现在完成时，选D。