请帮看一下 SC GWD-23-23

micro418

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.

A.        while it then proved unable to handle the increase in business, falling months behind in its payment to
B.        while it then proved unable to handle the increase in business and fell months behind in its payment to
C.        but then it proved unable to handle the increase in business, falling months behind in its paying
D.        but then proving unable to handle the increase in business, falling months behind in paying
E.        but then proved unable to handle the increase in business, falling months behind in paying


这一题的E选项是：

but then （the healthy care company was ）proved unable to handle the increase in business
还是 but then （the healthy care company ）proved unable to handle the increase in business


我觉得prove是被动的更通顺。 但是从很多资料上看到 proved 是和 became 平行的动作，是主动的。


另 falling months behind in paying 应该是只修饰 But 引导的分句吧。

jasonhaha

PROVE主动表示被动意思，你说的很对。
个人觉得 falling months behind in paying 是在修饰the healthy care company， 主句主语