【求助GWD TN24 -17Q2】

水色青空

2. GWD-23-Q23

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

答案选E……..我选的是C，理由是BUT连接两个独立的句子要有完整的主谓吧？而E中有几个地方不解，then 后面没有it，并且behind in its paying省略掉了its ?求解释~~非常感谢！~

salasbond

不选C的原因是，
1 如果加主语并把后面作为从句来处理的话，应该是it was proved,
2 fall behind in sth. 或者 fall behind in doing sth. ，所以如果加its的话，应该是falling months behind in its payment 而不是paying