We are looking forward to the problem of the traffic accident.A. see; solvingB. see; to s

问题补充：

We are looking forward to the problem of the traffic accident.

A. see; solving

B. see; to solve

C. seeing; solved

D. seeing; solve

答案：

A. see; solving

B. see; to solve

(答案→)C. seeing; solved

D. seeing; solve

解析：考察动名词用法和分词做补足语。本题第一空前面的look forward to期待；之中的to是介词，后面要接动名词doing的形式。第二空的动词solve与前面的名词the problem构成被动关系，故使用过去分词表示被动。句意：我们都很期待着这个交通事故的问题被解决。故C正确。