Earth Day is an event {#blank#}1{#/blank#} (annual) celebrated on April 22.{#blank#}2{#/blank#} (found) by Senator Gaylord Nelson, an American politician and environmentalist, it was originally aimed at helping the public to know the current situation of pollution and {#blank#}3{#/blank#} (get) people to care about the earth.

    In 1962, Rachel Carson's bestseller “Silent Spring” created an {#blank#}4{#/blank#} (aware) of the dangerous effects of pesticides(农药）. Then, a fire,{#blank#}5{#/blank#}broke out in 1969 on Cleveland's Guyahoga River, revealed the problem of chemical pollution in water. Senator Gaylord Nelson dreamed of{#blank#}6{#/blank#}similar event that would get people to take environmental issues seriously. In 1969, he was inspired by protests against the Vietnam War and came up with the idea for Earth Day.

    In the fall of 1969, Nelson announced it and appealed to the entire country to get involved. Consequently, telegrams, letters and telephone calls {#blank#}7{#/blank#} all over the country poured in. Since 1970, Earth Day celebrations have grown. Later, Nelson{#blank#}8{#/blank#}(award) the Presidential Medal of Freedom because of his work.

    Today, numerous communities celebrate Earth Week, an entire week of{#blank#}9{#/blank#}(activity) focused on the environmental issues. In 2017, the March for Science {#blank#}10{#/blank#}(occur) on Earth Day and was followed by the People's Climate Mobilization on April 29.

    It was {#blank#}1{#/blank#}(extreme) cold last Monday morning. While I was walking on my way to school, I noticed two street{#blank#}2{#/blank#} (clean) sweeping the street, across {#blank#}3{#/blank#}I walk every day. Seeing them {#blank#}4{#/blank#}(work) so hard on such {#blank#}5{#/blank#} cold morning, I was moved and made up my mind to do something for them. After arriving at school, I discussed with some classmates{#blank#}6{#/blank#} we could do. The next day, we got up early and prepared porridge at home. When we handed them the hot porridge and expressed our appreciation for {#blank#}7{#/blank#}(they) hard work, they looked a little {#blank#}8{#/blank#}(surprise) at first. And then they took the porridge, grateful {#blank#}9{#/blank#} our kindness. Although it was very cold, we all {#blank#}10{#/blank#}(feel) warm at that moment.

    When you step into a new environment, you might have some difficulty in fitting in. Here are some tips {#blank#}1{#/blank#} might help you.

    Be confident. You are unique in this world. Spend some time thinking about your {#blank#}2{#/blank#}(strong) and you will be able to build up confidence step by step.

    Be kind to everyone. Kindness is the bridge to your own happiness. Always give more than you receive, and think more of others than of {#blank#}3{#/blank#} (you). A person who cares for others is popular everywhere.

    Be active in group activities. {#blank#}4{#/blank#}(vary) activities like playing football can help you to be known {#blank#}5{#/blank#}others. You may add more friends to your circle. At the same time, you'll be amazed {#blank#}6{#/blank#} (see) how much they like you.

    Be optimistic. Optimism {#blank#}7{#/blank#} (make) both you and others feel pleased. It helps you make {#blank#}8{#/blank#}good first impression. A pleasant smile costs the {#blank#}9{#/blank#} (little) but does the most. If you follow the suggestions {#blank#}10{#/blank#} (mention) above, you will be accepted by people around you. And you will fit in very well and enjoy your new life.