问题

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

正确答案是：

同类题型

We all know that learning a foreign language _______ time and effort.

is constantly making efforts, shedeserves the goalof entering the key university

It’s late now, but I still have homework to do.

I haven’t received any messages from Sophia for two days. What’s wrong with her Don’t blame her for it She’s busying______ an exam

Parents need to encourage kids to develop their potential _____ putting too much pressure on them.