Question

I wrote a letter of complaint, and the airline has promised to _____ the matter.

A．look up

B．look into

C．look through

D．look for

Answer 1

B

考查动词短语辨析。Look up查找；look into调查；look through浏览；look for寻找；句意：我写了一封投诉信，航空公司允诺调查此事。