The traffic problems we are looking forward to seeing should have attracted the government

问题补充：

The traffic problems we are looking forward to seeing should have attracted the government’s attention.

A. solving

B. solve

C. solved

D. to solve

答案：

A. solving

B. solve

(答案→)C. solved

D. to solve

解析： 考查固定搭配。See+宾语+宾补，句中see的宾语The traffic problems和宾补solve间是动宾关系，所以要用过去分词solved，表被动。