to sun rain and wind for a long time the stone split.A. Being exposedB. Having exposedC

问题补充：

to sun, rain and wind for a long time, the stone split.

A. Being exposed

B. Having exposed

C. Exposed

D. To expose

答案：

A. Being exposed

B. Having exposed

(答案→)C. Exposed

D. To expose

解析：考查分词做状语。The stone与expose构成被动关系，所以使用过去分词。排除BD。而A表示正在被暴露。句意：长时间暴露在阳光，雨水和大风中，那块石头裂开了。C正确。