The price of oil has sharply to $12 a barrel.A. risenB. raisedC. been risenD. been raised

问题补充：

The price of oil has sharply to $12 a barrel.

A. risen

B. raised

C. been risen

D. been raised

答案：

(答案→)A. risen

B. raised

C. been risen

D. been raised

解析：rise 不及物动词“上升，升起”，raise及物动词“抬高，举起，饲养。”所以答案A。