to sunlight for too much time will do harm to one’s skin.A. ExposedB. Having exposedC. Be

问题补充：

to sunlight for too much time will do harm to one’s skin.

A. Exposed

B. Having exposed

C. Being exposed

D. After being exposed

答案：

A. Exposed

B. Having exposed

(答案→)C. Being exposed

D. After being exposed

解析：句意：在阳光下暴晒很长的时间对你的皮肤是有伤害的。expose的宾语后常可接介词to表示“将…暴露于…”; 动词宾语为oneself时,则意为“将自己暴露于…”“使自己受某人的影响”。 那么它的被动的短语就是be exposed to,又因为这里是做主语的所以用be 的动名词形式。故选C。