By the time they got to the guake-stricken area,the rescuers

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 17:42:34

By the time they got to the guake-stricken area,the rescuers--------what difficulty they would have helping the victims out.
A.sensed B.had sensed C.had been sensing D.were sensing
请问：为什么?

因为他们到了之后才意识到救援很困难. 都是讲述过去, 因此直接用过去式即可. 主句不存在动作上的早先完成

By the time they got to the guake-stricken area,the rescuers 1.___be sent to the stricken area? by the time we got to the cinema , By the time I got to school,the second class___ They got to the station on time yesterday的翻译 by the time she got up By the time I got to the bus stop,the bus___a ready ____ (le By the time i got to the but station the bus ) By the time you got to the airport, the guests ___ ______ le 改错:BY the time we got to the theater ,the first act has alre The film （）（begin）by the time I got to the cinema 动词填空 By the time i got to the cinema,the film_____(begin).