一个定语从句的题目Steel,brick and cement are all necessary building materi_英语解答

一个定语从句的题目
Steel,brick and cement are all necessary building materials _____ .
A.with which to build a dam B.which to build a dam with
C.building a dam with D.to build a dam
A和B有什么区别.还有CD为什么不能用.

人气：187 ℃　时间：2020-03-23 05:37:40

解答

解析：还原这句句子：Steel,brick and cement are all necessary to build a dam with.首先可以排除C,因为be necessary +to do,building a dam with是不正确的.其次这是一个定语从句,通过还原后的句子可知应该填的是...