◎ 题干
By the time my parents reached home yesterday, I _____ already _____ the dinner. 
[     ]
A. had; cooked
B. / ; cooked
C. have; cooked
D. did; cook
◎ 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“By the time my parents reached home yesterday, I _____already_____the dinner.[ ]A. had; cooked B. / ; cooked C. have; cooked D. did; cook…”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。