B
形容词可以做伴随状语的用法,例如：
She returned to work,unhappy．
The thief hid himself in the corner,afraid of being caught.小偷躲在角落里,怕被人抓住.
We watched the houses being destroyed by the storm,helpless.看着房子正在被暴风雨摧毁,无能为力.