假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文．文中共有10處語言錯誤，每句中最多有兩處．每處錯誤僅涉及一個單詞的增加、刪除或修改．
增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞．
刪除：把多余的詞用斜線（\）劃掉．
修改：在錯的詞下畫一橫線，并在該詞下面寫出修改后的詞．
注意：1．每處錯誤及其修改均僅限一詞；
2．只允許修改10處，多者（從第11處起）不計分．
    Hello，everyone．It's nice to speak about that we can do for our school，and I think small actions can make big difference．The first thing we can do is to make our campus more beautifully．Every one of them may plant a tree in the school or to organize a thorough cleaning on the campus．We can also form a good habit of putting rubbishes into trashcans．Never forget to turn off the lights and close the doors．We should not leave the tap water run or waste any materials in the laboratory class．In that case，I believe we'll turn our school in a better place to study and live in．
    How I wish we can enjoy a better school life!
    Thank you for listening!