一道初三英语题,希望有讲解谢谢,急在线等

题目

一道初三英语题,希望有讲解谢谢,急在线等
As we all know, wood and stones ______ bridges in the past.
A) used to build B) used to building
C) were used to build D) were used to building

答案

C
wood and stones作为主语,是复数,木头和石头是被用来造桥,所以用被动,something be used to do something短语的意思是“某物被用来做/作某物或某事”.时间状语in the past表明要用过去式,are的过去式是were,所以选择C项.