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.
请教关于连词用法! 一直不太明白连词如(but and)是否一定要引导完整句等? 出于parallel的考虑一般连词前后都需要是完整句,但是有好多次例外,求解! 如: After several years of rapid growth, the health 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)
E.but then proved unable to handle the increase in business, falling months behind in paying(就算是but后省略了主语,也应该是but then was proved...吧)