We mention the importance of giving up smoking once and again, but hardly______it.

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问题 We mention the importance of giving up smoking once and again, but hardly______it.

选项 A、did they realize
B、have they realized
C、they did realize
D、they have realized

答案B

解析 倒装句型。表示否定意义的词或短语位于句首时,句子要用倒装,可先排除C、D项。根据句意可知,此处应用现在完成时,表示之前的动作对现在发生事情的影响。所以选B。
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本试题收录于: 英语题库普高专升本分类
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