◎ 题干
They have never been to Beijing, _____?
[     ]
A. have they
B. haven't they
C. do they
D. don't they
◎ 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“They have never been to Beijing, _____? [ ]A. have theyB. haven't they C. do they D. don't they …”主要考查了你对  【反意疑问句】  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。