ie.The current administration ,being worried over some foreign trade barriers being removed and our exports failing to increase as a result of deep cuts in the value of the dollars ,has formed a group to study way s to sharpen our competitiveness
a.being worried over some foreign trade barriers being removed and our exports failing
b,worrying over some foreign trade barriers being removed ,also over the failure of out exports
c,worried about the removal of some foreign trade barriers and the failure of our exports
d,in that they were worried about the removal of some foreign trade barriers and also about the failure of our exports
e,because of its worry concerining the removal of some foreigh trade barriers ,also concerning the failure of out exports
key is C
LZM explains that ，C中worried 不是worry 的过去分词形式而是形容词，该插入语是对逗号前面主语进行限定。why?
