The heavy rainfall has caused vegetable prices to rise daily the last two months.A. byB.

问题补充：

The heavy rainfall has caused vegetable prices to rise daily the last two months.

A. by

B. since

C. for

D. with

答案：

A. by

B. since

(答案→)C. for

D. with

解析：“过去的两个月里这场大雨导致了蔬菜价格的提升。”for+一段时间，答案C。