◎ 题干
Only after  they had discussed the matter for several hours________a decision.
[     ]
A. they reached  
B. did they  reach
C. they reach    
D. do  they reach
◎ 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“Only afterthey had discussed the matter for several hours________a decision. [ ] A. they reached B. did theyreach C. they reach D. dothey reach …”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。