Question

---Hi, Lydia. Are you going to the concert on Friday?

---I’d like to. But there are so many problems_______.

1. A.
   remaining to be settled
2. B.
   remained settling
3. C.
   remaining to settle
4. D.
   remained to be settled

Answer 1

A
考查非谓语动词。Remain无被动，所以用remaining；而问题是要被解决，应用不定式的被动形式，所以选C。