- Why do you look so upset? There are so many troublesome problems .A. remaining to

问题补充：

--- Why do you look so upset?

--- There are so many troublesome problems .

A. remaining to settle

B. remained settled

C. remaining to be settled

D. remained to be settled

答案：

A. remaining to settle

B. remained settled

(答案→)C. remaining to be settled

D. remained to be settled

解析：句意：---为什么你看上去这么伤心？---有这么多麻烦问题去处理。首先是考察非谓语动词,remaining…可以理解为“表示伴随”的定语，表示“仍旧还存在”修饰名词problems，

to be settled为“不定式的被动用法”表示“将要被解决”, 经常靠的类似题目还有It remains to be seen．故选C。

考点: 考查非谓语动词的用法。