GWD 第四套几道语法题目求教了,跪求GWD31套讨论链接,求求大家给我吧

In Japan, a government advisory committee called for the breakup of Nippon Telephone and Telegraph Company, the largest telephone company in the world, so it would be two local phone companies and one long-distance provider.

1. In Japan, a government advisory committee called for the breakup of Nippon Telephone and Telegraph Company, the largest telephone company in the world, so it would be
2. The breakup of the world’s largest telephone company, Nippon Telephone and Telegraph Company, was called for by a government advisory committee in Japan, so it would be
3. A government advisory committee in Japan called for the breakup of Nippon Telephone and Telegraph Company, the world’s largest telephone company, into
4. The breakup of Nippon Telephone and Telegraph Company, the world’s largest telephone company, was called for by a government advisory committee in Japan, so it would be
5. Called for by a government advisory committee, the breakup of Nippon Telephone and Telegraph Company in Japan, the world’s largest telephone company, was to be into

求教解决此题的关键在哪里,使因为in japan 的位置吗，还是后面的so it could be 不对，还是call for...into 不对，此题我思维比较混乱，请大家帮我理一下。 答案是C

In 1713, Alexander Pope began his translation of the Iliad, a work that, taking him seven years until completion, and that literary critic Samuel Johnson, Pope’s contemporary, pronounced the greatest translation in any language.

1. his translation of the Iliad, a work that, taking him seven years until completion, and that literary critic Samuel Johnson, Pope’s contemporary, pronounced
2. his translation of the Iliad, a work that took him seven years to complete and that literary critic Samuel Johnson, Pope’s contemporary, pronounced
3. his translation of the Iliad, a work that had taken seven years to complete and that literary critic Samuel Johnson, Pope’s contemporary, pronounced it as
4. translating the Iliad, a work that took seven years until completion and that literary critic Samuel Johnson, Pope’s contemporary, pronounced it as
5. translating the Iliad, a work that had taken seven years to complete and literary critic Samuel Johnson, Pope’s contemporary, pronounced it

答案是B

此题选项一看，只剩下bc，但是我选择了c ，请问这个it的错误是因为前面that 的存在而错误的吗，请教了。

After several years of rapid growth, the healthy care company became one of the largest health care providers in the metropolitan area, while it then proved unable to handle the increase in business, falling months behind in its payment to doctors and hospitals.

1. while it then proved unable to handle the increase in business, falling months behind in its payment to
2. while it then proved unable to handle the increase in business and fell months behind in its payment to
3. but then it proved unable to handle the increase in business, falling months behind in its paying
4. but then proving unable to handle the increase in business, falling months behind in paying
5. but then proved unable to handle the increase in business, falling months behind in paying

此题答案是C，请问falling months behind in its paying doctors and hospitals做什么成分，以及请大家帮我翻译下，以及解释过程