根据短文内容和所给中文提示，写出空白处各单词的正确形式。每空限填一词。
April 22nd is Earth Day, a special day to learn about our earth and how to take care of it. People all over the world take time out to{#blank#}1{#/blank#}(保护）the earth.
On that day, some people listen to speeches about environment.{#blank#}2{#/blank#} (其余的）help clean up their offices or save {#blank#}3{#/blank#}(水）and electricity at home. Your parents may even{#blank#}4{#/blank#}(决定）to take a day off from driving the cars.
The idea for Earth Day came from a US officer, who was {#blank#}5{#/blank#}(担心）about pollution and the health of {#blank#}6{#/blank#}(植物）and animals. And it{#blank#}7{#/blank#}(迅速地）spread（推广）. In 1970, the first Earth Day was celebrated. More than 20 {#blank#}8{#/blank#} (百万）people in cities all over the U.S. took part in it{#blank#}9{#/blank#}( 自从 ) then, Earth Day has been used to educated people about the role in taking care of our planet.
Now, Earth Day has{#blank#}10{#/blank#}(变成）a global celebration.
