We didn't know ______such a difficult problem.A.why we should deal with B.why to deal withC.what to do with D.what we should do with

问题描述:

We didn't know ______such a difficult problem.
A.why we should deal with B.why to deal with
C.what to do with D.what we should do with

A 我们不知道为什么我们要处理如此困难的问题。

C

C
我们不知道如何处理这个难题

d

C 一个困难的问题应该不知道怎麽做 且句式应该是:
We didn't know __(疑问代词)+ to do__such a difficult problem.

A正确