题目内容：

Earth Hour started in Sydney on March 31st, 2007. It calls on families and buildings to turn off the lights from 20:30 to 21:30 on the last Saturday night of March. In 2007 more than 2.2 million homes and businesses turned off their lights.

A year later, on March 29, Earth Hour 2008 became a global activity and was supported by 50 million people from thirty-five countries. On March 28, 2010 over 2100 cities in another eight countries took part in it. Earth Hour came to China on that day, too.

In 2012 in China, there were many cities taking part in his activity, especially some large cities, such as Beijing, Shanghai…. Many people consciously(有意识的) turned off lights in the hour. And without lights, they could also enjoy themselves. In colleges some students held some activities to make all the students leave their dormitories.

It was 20:30, Beijing time. Some people in Beijing were having a nice talk with their friends. In Shanghai some people were taking a walk with their families or friends. And in Ningbo some young people were holding a party in a park, singing and dancing. The people from the three cities felt very relaxed.

1.Did Earth Hour first start in Australia?

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2.When did Earth Hour come to China?

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3.What were people in Shanghai doing during Earth Hour?

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