What is Earth Hour? It is an hour people turning off （关掉） their lights. The first Earth Hour was started in Australia on Saturday, 2007.
What are people doing during Earth Hour this year? Alice is not watching TV with her parents. She is looking at the stars in the sky with them. Kitty and her brother are not reading stories. Their grandma is telling them a story. Sally is not doing her homework right now. She is playing word games with her family.
Everyone can do a lot to help our home in Earth Hour.
