Not until the early 1900s______to vote in the US.
问题描述：
Not until the early 1900s______to vote in the US.
A.were allowed women B.they allowed women
C.were women allowed D.did women allow
为什么选c,求分析.为什么不选A.为什么women要放allowed前面
答
C.were women allowed
Not until 放句首,要用倒装 主语和谓语动词颠倒一下位置即可