题目

Have you ever heard of the story of Earth Day Now let me tell you
A man named John McConnel from the United States started Earth Day in 1970 .In the beginning ,it was held on one day in spring when the day and night are of the same length（长度）around the world .Now it’s celebrated on April 22.Earth Day is now celebrated all over the world .
Earth Day is a very special day .It makes all of us think about problems we make for the earth .It’s not only a special day in the city where we live ,but a day that the whole world celebrates .
Some countries have Earth Day celebrations ,and some people and groups join in Earth Day projects such as “Protect Our Home ”and “Water for Life”.
You can join in one of the projects ,or start one of your own .It can be something small like planting a tree with your mom ,or something large like cleaning up a park with your classmates or friends .You can do almost anything .Try to think of something you would like to do .
Why do we celebrat

提问时间：2020-10-03

答案

1、American 22nd
2、celebrate happened
1、celebrations joining
2、matter whether
3、ask on protect