◎ 题干
My father and my mother have been married for 30 years, and never once ____ with each other.
[     ]
A. have they quarreled
B. they have quarreled
C. did they quarrel
D. had they quarreled
◎ 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“听录音,选出你听到的句子。( ) 1. A. He is playing basketball.( ) 2. A. We are eating cakes. ( ) 3. A. Are you crying? ( ) 4. A. Who is standing? B. …”主要考查了你对  【现在完成时】【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。