◎ 题干
Mary, I should tell you it is the third time that you________ your homework.
[     ]
A. forgot to do    
B. forgot doing
C. have forgotten to do    
D. had forgotten doing
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Mary, I should tell you it is the third time that you________ your homework. [ ]A. forgot to doB. forgot doingC. have forgotten to doD. had forgotten doing…”主要考查了你对  【现在完成时】  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。