求助大全 补充250 160

160. An attempt to ratify the Equal Rights Amendment, begun almost two decades ago, has been unsuccessful despite efforts by many important groups, including the National Organization for Women. a
(A) to ratify the Equal Rights Amendment, begun almost two decades ago,
(B) begun almost two decades ago, for ratifying the Equal Rights Amendment
(C) begun for ratifying the Equal Rights Amendment almost two decades ago
(D) at ratifying the Equal Rights Amendment, begun almost two decades ago,
(E) that has begun almost two decades ago to ratify the Equal Rights Amendment

这个题为什么选A啊?

      an attempt to do sth

      说点事情：楼主你的题目没有加下划线，问问题时候也没有说明哪里不理解，这样会让大家没兴趣回答你

哦,谢谢提醒啊,