根据下列提示，以Earth Hour为题写一篇短文，宣传这一倍受全球瞩目的环保活动。

Earth Hour
Earth hour started in Sydney at 7:30 pm on March 31,2007. The activity aims to save energy and improve climate. This year, more and more people all over the world took part in it on March 26. Some people had dinner with their family in the candlelight or chatted with their friends. At that time, my classmates and I were holding a party in the park, singing and dancing. Lots of people were walking in the park. And this year, Earth Hour not only asks people to turn off lights, but also calls on us to protect the environment in our daily life. We can do a lot of things. For example, we can use paper both sides. We should ride bikes or walk to school. What’s more, we’d better take our own shopping bags while shopping. Let’s do something now to help save our planet.

本题是写一篇给定材料的书面表达，写作的话题为地球日，具体内容包括地球日来源，活动目的，以及全世界人们的参与情况，个人所参加的活动，以及今年的活动不仅包括熄灯，而且包括环保，以及提出个人的看法和建议，在写作时应注意符合题意，注意语言的准确性和连贯性。