◎ 题干
If they ______ what I was saying, they'd know what I was talking about.  
[     ]
A. took the trouble to listen to                
B. had trouble listening to  
C. take the trouble to listen to                
D. have trouble listening to
◎ 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“If they ______ what I was saying, they'd know what I was talking about. [ ]A. took the trouble to listen to B. had trouble listening to C. take the trouble …”主要考查了你对  【虚拟语气】  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。