◎ 题干
I didn't understand _____, so I raised my hand to ask.        
[      ]
A. what my teacher says          
B. what does my teacher say        
C. what my teacher said          
D. what did my teacher said
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“I didn't understand_____, so I raised my hand to ask. [ ]A. what my teacher says B. what does my teacher say C. what my teacher said D. what did my teacher…”主要考查了你对  【一般过去时】【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。