It is reported that the police will soon the case of two missing children. A. look uponB.

问题补充：

It is reported that the police will soon the case of two missing children.

A. look upon

B. look after

C. look into

D. look out

答案：

A. look upon

B. look after

C. look into

D. look out

解析：本题考查动词短语。根据题意可知应选look into “调查”。