ここから本文です。 更新日:平成24年5月25日 サイトの使い方 How to use Environmental Class Nature Class 用語集 Vocabulary Question13 In the "Let's make Lake Hamana's water beautiful - group", every year on June "Green Lake Hamana activity" is conducted. How many region residence are participating to protect the Lake Hamana ? 300 people 3,000 people 30,000 people