42,-ing ,-ed 的区别? 请NN指教

42. 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 dollar, has formed a group to study ways 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 our 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 concerning the removal of
                some foreign trade barriers, also concerning
                the failure of our exports

C是正确答案,

问: 为什么不用WORRYing about ?

  ---ing 与- ed   区别?

(B)  worrying over some foreign trade barriers being removed, also over the failure of our exports
                

1.一般使用worry about

2.also是副词，不能连接的

3.sb worry over sth而不是worry over sb bing done，况且这里的being moved也有问题

1.一般使用worry about

2.also是副词，不能连接的

3.sb worry over sth而不是worry over sb bing done，况且这里的being moved也有问题

刚才看了看白勇语法:

状语有5种形式:

副词, 介词短语, -ing,  不定式, 状语从句.

  没有-ed zuot

没有提到-ed作状语哦??????

以下是OG的解释, 想问是不是描述状态而不是行动时, 倾向用-ed???

Choice C is best because its phrasing is parallel and concise. A, D, and E begin with unnecessarily wordy phrases. Choice C also uses the idiomatic expression worried about rather than worried over (as in A) or worrying over (as in B); worried about is preferable when describing a condition rather than an action.
                Whereas C uses compact and parallel noun phrases such as the removal... and the failure ... , the other choices employ phrases that are wordy, awkward, or nonparallel. D is also flawed in that the plural pronoun they does not agree with the singular noun administration.

worried is an adjective, but not a verb even though ending "-ed".

for example:  i'm worried about you.

The current administration, C  = The current administration, (who is) C            "the administration 是人"