【题目】We have dealt with a large part of the problems, and the rest ________ by you.
A.remains to solve
B.remains to be solved
C.remain to be solved
D.remain to solve

【答案】C
【解析】句意：我们已经处理了问题的一大部分，其余的仍然由你解决。The rest指the rest of the problems，主语是复数，所以谓语是复数；the rest与solve之间为被动关系，应用动词不定式的被动形式，故选C。