I once had an unforgettable experience that has affected and directed the way I think and act now.

    When I was about seven years old, my grandfather {#blank#}1{#/blank#} me to a fish pond on a farm and told me to throw a stone into the water. He told me to watch the circles created {#blank#}2{#/blank#} the stone. Then he asked me to think of myself as that stone. “You may create lots of circles in your life, but the waves {#blank#}3{#/blank#}come from those circles will disturb (干扰) the peace of all the people around you,” he said {#blank#}4{#/blank#}. “Remember that your circle may spread to many other circles, meaning that your thoughts or actions may disturb others' {#blank#}5{#/blank#}. You are responsible for what you put in your circle. If you want, the good or peace that comes from your circles{#blank#}6{#/blank#}to others. At the same time, the anger or jealousy (嫉妒) coming from your circle will also spread to other circles. You should allow the good feelings {#blank#}7{#/blank#} others, not the bad ones, because you are responsible for both.”

    That was the {#blank#}8{#/blank#} time I heared my grandfather tell me these. I had realized that each person's {#blank#}9{#/blank#}or anger can move out into the world. If we are filled with doubt or anger, we cannot create world peace. We spread the feeling and thoughts that we hold inside, whether we speak {#blank#}10{#/blank#} or not. These circles are spreading into the world. Creating beauty or making troubles to other circles of life.

    Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things {#blank#}1{#/blank#}. Pollution comes in many forms. We see it, smell it, drink it and {#blank#}2{#/blank#} hear it.

    Man is now slowly polluting the whole {#blank#}3{#/blank#}

    Air pollution is still the most serious. It's bad for all living things in the world, {#blank#}4{#/blank#}it is not the only kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us {#blank#}5{#/blank#}more easily.

    Many countries are making rules to {#blank#}6{#/blank#}pollution. They stop people {#blank#}7{#/blank#}burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO₂ is now the most dangerous kind of air pollution. It is {#blank#}8{#/blank#}by heavy traffic. We are sure that if there are fewer people driving, there will be {#blank#}9{#/blank#} air pollution.

    The Earth is our home. We must take care of it. That means {#blank#}10{#/blank#}the land, water and air clean .And we must take care of the rise in pollution at the same time.

    In recent years, with the development of technology, many popular apps(应用程序) have been produced. These days, an app has caught great attention. It is Douyin, a video sharing app. Douyin first {#blank#}1{#/blank#}in 2016. Now it is many people's favorite app,{#blank#}2{#/blank#}the young.

    With Douyin, users can record videos, edit (编辑) them and {#blank#}3{#/blank#}them online. It is very easy{#blank#}4{#/blank#}interesting. We can share our videos with our friends with just a tap on the mobile phone screen. What's more, it's a great way to spend our free time by {#blank#}5{#/blank#}through those funny videos.

    However, every coin has two {#blank#}6{#/blank#}. The app also has bad things. On the one hand, some people spend long hours {#blank#}7{#/blank#} the app, which is harmful for their health. On the {#blank#}8{#/blank#} hand, users can also find some bad things on the app. Such thing is unsuitable and meaningless.

    In my opinion, Douyin should check the videos {#blank#}9{#/blank#} they are uploaded(上传)in order to keep a healthy environment for its users. Douyin is not {#blank#}10{#/blank#}for teenagers. We should not use it too often.