Question

We were badly treated in the hospital.
Don’t worry.The president has promised to ______ your complaint at once.

A．look up

B．look into

C．look back on

D．look forward to

Answer 1

B

考查短语辨析。look up 查字典，look into 调查，look back on 回顾，look forward to 期望，句意：在医院我们被对待的不好，别担忧，院长已经答应了马上调查你的抱怨。所以选B。