knives are used ______ things .
问题描述:
knives are used ______ things .
A.cut B.cutting .C.to cut D.in cutting
答
c be used to do sth,被用来做什么 固定结构
knives are used ______ things .
A.cut B.cutting .C.to cut D.in cutting
c be used to do sth,被用来做什么 固定结构