The authorities will the case further before they can e to a conclusion about it .
A. look out
B. look up
C. look through
D. look into
网友回答
A. look out
B. look up
C. look through
(答案→)D. look into
解析：考查短语辨析。look out当心，look up 查字典， look through浏览，look into 调查，句意：官方人员在得出结论之前他们将进一步调查这个案件。故选D。