(单选题)
It was nearly a week ______ the rescues team located the crashed plane.
A.since
B.until
C.before
D.after
参考答案:C
参考解析:
考查before引导的时间状语从句。句意:差不多一个星期后,救援队才找到坠毁的飞机。since意为“自从”,“since+瞬间动词过去时”是从该动作发生时起算,“since+延续性动词过去时”是从该动作结束时起算;until意为“直到”;before意为“在……之前”;after意为“在……之后”。It will be + some time + before sb. does sth.或It was + some time + before sb. did sth.常意为“要过一段时间或者过了一段时间……才……”。根据句意可知,此处应填入“过了一个星期才发现……”。故选C。
知识点: