The current administration, worried about the removal of some foreign trade barriers and the failure of our exports to increase as a result of deep cuts in the value of the dollors, has formed a group to study ways to sharpen our competitiveness这是填上答案的正确句子,我想问一下,插入语worried about 为什么不是worrying about,个人觉得是主动的关系呀(和administration)