请教大家一道题

The current administration,being worried over some foreign trade barriers being removed and our imports falling to increase as a result of deep cuts in the value of dollar, has formed a group to study ways to shapen our competiives.

A being worried over some foreign trade barriers being removed and our imports falling

B worrying over some foreign trade barriers being removed also over the failure of our imports

C worride  over the removal of some foreign trade barriers and the failure of our imports

D in that they were worried about  the removal of some foreign trade barriers and also about the failure of our imports

answer:C

worried 在这里应该是做状语的吧 可是他与主语应是地关系啊 为什么有了过去分词？？？

希望大家可以帮我解答 不胜感激