求一道高中英语非谓语动词题

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being tired强调进行 tired and short of breath表示状态（________to sunlight for too much time） will do harm to one's skin.A.Exposed B.Being exposed 括号里的作主语,动名词作主语,又表示被动所以用动名词...
======以下答案可供参考======
供参考答案1:
being tired强调进行
tired and short of breath做伴随状语
后一个是动名词作主语 必须加being