◎ 题干
Internet shopping is really _____ when people are sure of its safety and security.
[     ]
A. taking off
B. taking up
C. setting off
D. setting up
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Internet shopping is really _____ when people are sure of its safety and security. [ ]A. taking off B. taking upC. setting off D. setting up …”主要考查了你对  【动词短语】  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。