#[2] ----- to sunlight for too much time will do harm to one

2] 【Being exposed _ to sunlight for too much time 主语 】【will do harm to 谓语】【 one's skin.宾语 】
在阳光下暴露过长时间对人健康有害.
A.Exposed
B.Having exposed
C.Being exposed
D.After exposed
解题关键：
①原题干中缺少句子主语,所填成分必须能做主语
②be exposed to sth暴露在.下