2 . 阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Square dancing is a well-known recreational group activity in China. It 1 (start) to gain popularity in the mid-1990s when groups gathered at squares, parks, and other open spaces 2 (dance) in the mornings and evenings. Most of these 3 (individual) are senior citizens in search of new friends and activities to keep themselves 4 (occupy). It's about more than just dancing; it's a way about meeting new friends and sharing their life stories, 5 benefits them both mentally and physically.
Ahead of the Beijing 2008 Olympic Games, when authorities launched the 6 (promote) of national fitness activities, square dancing became 7 (popular) than before. According to official statistics, there are presently over 120 million Chinese who regularly take part 8 this activity across the nation's squares. And most participants are happy with their current living conditions.
9 , loud music played during square dancing was considered as terrible noises. In recent years, national standards and regulations 10 (introduce) to make the exercising more public-friendly and further ensure its sound development.
