Many experts say the problem of the economic crisis may lead to more serious ones if (left)unsolved

题目

Many experts say the problem of the economic crisis may lead to more serious ones if (left)unsolved
A making B left C remained D keeping 请问为什么选C,怎么翻译
不好意思，看错了，请问高手为什么选B

答案

许多专家说如果不解决金融危机所带来的问题,可能会更严重的问题出现.原句是if it is left unsolved 的省略句.leave sth +adj表示"使……维持……状态”;be left +adj表示“处于……状态（不变）”