— What made your skin look so terrible? — to the sunlight for a long time. A. Because it

问题补充：

— What made your skin look so terrible?

— to the sunlight for a long time.

A. Because it was exposed

B. After being exposed

C. Being exposed

D. Exposed

答案：

A. Because it was exposed

B. After being exposed

(答案→)C. Being exposed

D. Exposed

解析：句意：什么使你的皮肤看起来如此糟糕呢？可知是对主语进行提问。答语为：长时间暴露于阳光下使我的皮肤看起来如此糟糕。Be exposed to 暴露于，所以用动名词做主语，省略了重复的部分。选C。