It was evening___we teached the little town of winchester

题目

It was evening___we teached the little town of winchester
A.that B.until C.since D.before
为什么选D

答案

正确的答案是d.
天已经黑了.那么这表示结果.后面写发生什么事情.
b,c 肯定不对.如果选这两个后面应该是数字.这里没有.
a 为语法结构不能选.