问题补充:
---Why do you look so upset?
---There are so many troublesome problems .
A. remaining to be settled
B. remained settled
C. remaining to settle
D. remained to be settled
答案:
(答案→)A. remaining to be settled
B. remained settled
C. remaining to settle
D. remained to be settled
解析:考察非谓语动词。根据句子结构可知,该处为problems的定语,remain是系动词,无被动。故排除BD. Remain的用法是sth remain to be done,
句意为,有很多麻烦的问题留待解决。