-Why do you look so tired?-There are so many problems___

问题描述:

-Why do you look so tired?-There are so many problems___
A.remaining to settle
B.remained settling
C.remaining to be settled
D.remained to be settled

C.remaining to be settled
解析:
remain 在There be结构中用作problems的后置定语.
由于remain是不及物动词,故应用现在分词remaining.相当于定语从句that
remains
动词settle置于remain之后,应用动词不定式的被动结构来表示动作还未完成.