问题
选择题
It was evening__________we reached the little town of Winchester.
A．that
B．until
C．since
D．before
答案
D
当主句谓语动词表示一段时间或受一段时间的状语修饰时，常用before，意为“才”或“还未……就……”。如：
1）It was quite some time before he found the elephant at all.
过了好长时间他才发现大象。
2）We had walked a long way before we found some water.
我们走了老远的路才发现水。