Our world has been greatly affected by global warming and it is critical (关键的) that people, young and old, join hands to fight it. Most     1     (important), children today should learn to be eco-friendly at a young age.

It is believed that the nation should ask schools to have     2     educational class about “Green Living”. Every school should teach students     3     (know) about global warming and what they can do to reduce their carbon footprints. In the classes, students could be assigned to find several solutions to energy problems while learning about their effects     4     the earth. Students also should     5     (encourage) to use what they learned in class at home.

Too many people think that global warming is not a threat, but it is one of our     6     (big) problems. Steps taken to be “green” in the school     7     (be) so effective. What would children be learning if the school’s lights were always left on and there were no recycling bins?

Green living and green schools are part of a new wave     8     (sweep) over the nation. How will our future leaders respond after years of living in a community     9     protecting our world’s natural environment just isn’t considered important? Schools and the government should teach young people to devote     10     (they) to dealing with global warming.

Traditionally, livestreamers sell delicious snacks or local goodies. But     1     recent livestream event in Tibet autonomous region did something different. Waste plastic bottles,     2     are regarded as a great damage to the local environment, were sold for 0.5 yuan each, with the purpose of raising peopled     3     (aware) of Tibet’s pollution issue.

According to the Sohu website, in 2019, about 40 million tourists visited Tibet, which in consequence left about 360 million plastic bottles     4     (throw) in branches, on cliffs and in rivers. Not only does the white pollution cause serious threat to the delicate ecosystem     5     the death of local animals.

Over the past few years, more than 5,000 volunteers of different ages and from all walks of life     6     (participate) in the anti-white pollution campaign. They carry out over 2,000 clean-ups to collect 200,000 bottles left by tourists each year. Then the bottles are sorted by color and shipped inland     7     (make) raw materials. Roughly, each bottle costs about 0.5 yuan.

The livestream has successfully involved more people     8     the anti-white pollution campaign. People can scan QR code and donate money to encourage more people to collect bottles. It’s really a meaningful event and helps to make     9     possible for us human beings to coexist with nature     10     (harmonious).

Environment-friendly ideas have been created to supply people with helpful     1     (tip) on how they can help the environment     2     well as save money. I honestly believe that everyone wants to help the environment, even if they do or do not believe in     3    （globe）warming.

With power bills, water bills and all other expenses     4     (continue) to rise, it’s very hard for the average worker. No matter what your financial position is, there is always something everyone can do     5     (help) save our environment. We are not the only ones that live on this     6     (amaze) planet. We also share it     7     a wide range of strange and wonderful animals. It would be a great tragedy if they     8     (be) not around for our future generations to enjoy. Every little bit helps, so please do all     9     you can to protect our environment and the environment of these surprising animals.

I hope these environment-friendly ideas can help everyone to do     10     (they) bit for the environment and to make this world a better place.

Amsterdam has decided to remove gas vehicles (机动车) from the roads. By 2030 only non-polluting vehicles will be allowed in the streets. The Netherlands     1    （make）great efforts to protect the environment since the 90s.The Clean Air Action Plan,     2     is aimed at removing polluting vehicles from the city, is the newest measure. The new policy is important because air pollution in the Netherlands is above European standards,     3    （cause）risks for respiratory（呼吸的）illnesses. "Pollution is often a silent     4    （kill）,”said Ms. Sharon Dijksma, who is responsible     5     the city's traffic.

The city will stop using gas vehicles gradually and increase the use of cleaner vehicles. Charging stations    6    （offer）to those who buy electric vehicles. Fund and special parking permits will     7    （probable） be provided to encourage the use of environmentally friendly cars. In Netherland, 30percent of commuter（通勤者） travel by bike.     8    , cars are still major sources of particle matter pollution.

That is     9    they plan to ban all polluting cars.

Hopefully, this policy will encourage other cities to ban polluting vehicles as well. In fact, Brussels is already considering     10    （adopt）the policy.

Whales have been facing serious danger for a long time.

First, due     1     the greenhouse effect, glaciers are melting, and some living creatures in the Antarctic and the Arctic are in danger of     2     (extinct). Besides, with global warming becoming worse, life in other parts of the ocean has also been     3     (constant) affected, including whales.

Secondly, whaling activity is another killer. Historically, whaling has been popular in some overseas countries, such as England, Japan and Norway.     4     (regard) whales as a money-making machine is the reason why some people’s whaling can’t     5     (stop) easily. A kilogram of whale meat can fetch about $ 100 in Japan. Besides, advanced technology has increased the efficiency of whaling and gradually reduced the number of whales. What’s more, some countries are still on whaling in     6     name of science.

The fact     7     whales have become endangered animals is alarming us. Some     8    (organization) have realized the importance of saving them and have begun working hard to do something for them. The international community     9    (make) a strategy against commercial whaling. In my opinion, governments should also make laws     10    (protect) whales.

Litter is everywhere, doing great harm to the environment and life on our planet. Jeff Kirschner, who wants to build a litter-free world, started a global community named Litterati     1     (settle) this problem.

The story began with his 6-year-old daughter. One day they were going on a hike     2     the girl noticed a broken plastic tub in a river. She said, “Daddy, that doesn’t go there.” That took Kirschner by surprise. He, like many adults, bad become so used to the rubbish around them that he hadn’t given it     3     second look.     4     his daughter said reminded him of the serious problem our planet faces.

Jeff started to take action. He created Litterati, an app that makes it fun to pick up litter. The idea is     5     (fair) simple: Spot a piece of trash, take a photo, post the photo online and then put the litter into dustbins.

    6     that Jeff was keeping a record of the positive impact he was having     7     the environment, people worldwide started participating in it. Up to now, over 2,500,000 photos posted by 3,500 people from over 40 countries     8     their way to Litterati’s digital landfill.

Litterati is more than an app,     9     is a highly effective solution to a pressing issue. Wherever you live, whatever you do and whoever you are, join Litterati to make the world a cleaner and     10     (health) place to live in!