题目内容：

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或用括号内单词的正确形式填 空。

The 10th year of online shopping in China

In 2009, 3G network technology1.(put)into commercial use. China’s mobile Internet users increased by 120 million in this year,    2.is highly concerned by the international community. The number of online 3.(shop) was over 100 million. On November 11，2009, Tmall kicked off 4.first “ Singles Day ”shopping festival, the5.(big) shopping    day    of    the    year, with 27 brands 6.(participate) in for the first time and final turnover of 50 million yuan. At the same  time, Tmall enabled more than 200 countries and regions 7.(enter) the “free delivery  area”.

The next decade8.(see) an explosion    of online shopping in China. From 50 million9.213.5 billion, the 10.(constant) refreshed data reflect the release of a large number of consumer demands and the great power of digital economy.