___to sunlinght for too much time will do harm to one's skin.

A.Exposed B.Having expossed C.Being exposed D.After being exposed

怎么做？为什么？谢谢！

___to know Professor smith. help ___to some cakes,everyone(you) He ___to school to clean his classroom. we ___to start our own business I am ___to know what she said. Not until ___to go on strike. It issaid that the workersin the Disneyland ___to have beards. She was the first woman ___to shuch a post. What's happened to Tom? ___to hospital. "excuse me, ___to the nearest bookshop please?"