◎ 题干
Much to my disappointment, by the time I got to the airport, the flight to London _____.

A. had taken off
B. has taken off
C. took off
D. will have taken off
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“Much to my disappointment, by the time I got to the airport, the flight to London _____. [ ]A. had taken off B. has taken off C. took off D. will have taken…”主要考查了你对  【过去完成时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。