◎ 题干
I don't know _____or not.
[     ]
A. whether he is at home    
B. if he is at home
C. that he is at home        
D. whether is he at hom
◎ 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“I don't know _____or not.[ ]A. whether he is at homeB. if he is at homeC. that he is at homeD. whether is he at hom…”主要考查了你对  【宾语从句】  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。