---Why do you look so 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：C
试题分析：考查remain的用法。句意：你为什么看起来非常伤心？因为还有很多事情待处理。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。故选C。 考点：考查remain的用法