◎ 题干
The teacher asked Ben _______ a difficult question in class.        
[     ]
A. answer          
B. answering        
C. to answer          
D. answered
◎ 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“The teacher asked Ben _______ a difficult question in class. [ ]A. answerB. answering C. to answerD. answered…”主要考查了你对  【不定式】  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。