问题补充:
--- Why do you look sad?
---There are so many problems .
A. remaining to settle
B. remained settling
C. remaining to be settled
D. remained to be settled
答案:
A. remaining to settle
B. remained settling
(答案→)C. remaining to be settled
D. remained to be settled
解析:考查remain用法。Remaining剩下的;sth remain to be done某事有待于被做;本题是两个用法相结合形成remaining to be settled修饰problems.