题目内容：

The policeman was_____the matter,______to find out the truth as soon as possible.
A.looking over,hoping B.looking down,hoped
C.looking into,hoping D.looking at,hoped

优质解答

look over
v.
从...上面看,察看,检查,原谅
调查,从上面看过去
look down俯视
look into调查；研究
look at 还用我说?
另外动词不能直接作主语 要用动词不定式 或动词的ING形式 代替
所以选CCCCCCCCCCCCCCCCC