问题描述：
英语的一个语法问题.急
----to sunlight for too much time will do harm to one's skin.
A.Exposed B.Having exposed C.Being exposed D.After being.
为什么用被动进行时而不能用一般的?
----to sunlight for too much time will do harm to one's skin.
A.Exposed B.Having exposed C.Being exposed D.After being.
为什么用被动进行时而不能用一般的?
问题解答：
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