◎ 题干
Only when he read the newspaper _____ the US President Obama would deliver a speech in his
university.
[     ]
A. he knew          
B. he had known      
C. had he known  
D. did he know
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Only when he read the newspaper _____ the US President Obama would deliver a speech in his university. [ ]A. he knew B. he had known C. had he known D. did …”主要考查了你对  【一般过去时】【部分倒装】  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。