We really want to know ____use canbe made of this material.
问题描述：
We really want to know ____use canbe made of this material.
We really want to know ____use can be made of this material.
A.what B.that C.which D.how
选哪个?为什么?
答
选A,考察短语make use of sth,这里补充的是这个材料的用处是什么,亦即make what use of this material,所以变成疑问句后选择A