阅读下面材料，在空白处填入适当的内容（1个单词）或括号内的单词的正确形式。

Some of you may play Ant Forest, 【小题1】 game on Alipay. Users collect “energy” to make their “trees” grow. When the “energy” 【小题2】(reach) a certain level, some 【小题3】(organize) and companies will plant a real tree in a desert area of China. And now it seems that the nation’s efforts to make a greener world have paid 【小题4】.

According to a study 【小题5】(publish) in the journal Nature Sustainability, China and India are 【小题6】(main) responsible for making the Earth greener over the past two decades. The study has found that since 2000 the Earth’s green leaf area has increased by 5 percent, or over 5 million square kilometers, 【小题7】 is an area equal to the total area of the Amazon rainforest. China and India account for one 【小题8】(three) of the increased greening, but contain only 9 percent of the planet’s land area covered in vegetation(植被). China was the major contributor, adding 25 percent to this increase, while India added 6.8 percent. There is no 【小题9】(deny) that China is one of the most successful countries in 【小题10】(green) the desert.