求助GWD23-23( 没搜到讨论的说）

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

答案选的是e, 我选的是A .

BUT 做连词后面不是要加完整句么，这里的E 连完整句都不是， 明显不对啊。。。。

请nn门指教

如果主语一致是可以省略的

恩，谢谢斑竹。

我今天做prep 也遇到了类似的题目，也是省略的选项对

顶起来,请问b为什么不对?

顺便问while的用法,谢谢

choice B

in its payment to is wordy and awkard, it should be replaced by in paying

但是新东方教材上有道题：

In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.

A. In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.

D. In an assessment of the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.

答案选D. 解释是in assessing不好...不懂~~~