When     1     (ask) by a TV reporter to talk about air and water quality in his hometown, Qi Mu noted, “The air is great now, and we can take more walks and enjoy being outdoors again.” He felt quite pleased because the villagers were living     2     (harmonious) with nature once more. However, he could not forget about an earlier time     3     his village had been struggling with a serious air quality problem.

In the 1990s, garbage from nearby city was usually brought to the village. “How can we make use of this?” The villagers wondered. Soon they found that garbage could be used     4     (feed) pigs. “Over the next few years,     5     (dozen) of pig farms were set up,” Qi recalled. But then nobody in the village wanted to open their windows. “The smell from the garbage and pig waste was making us sick,” Qi said. The numbers of mosquitoes and flies were also     6     (horrify). “Under such circumstances, no single women wanted to marry anyone in our village and move here,” Qi     7     (sigh).

The villagers could no longer tolerate the situation. So     8     initiative was launched and “clean-up” campaign was added to the government agenda, including restricting large vehicles     9     passing through the village. Garbage from the city was no longer disposed of in the village and more trees were planted. “We can all breathe more freely now that the natural beauty of our village     10     (restore) since then,” said Qi.

Zou Yi, an environmentalist     1     lives in Beijing, has filmed the a quality near his home using his cellphone since 2013. For almost a decade to now, he     2     (take) more than two million photos to chronicle Beijing major environmental changes. The main purpose of taking these photos is     3     (record) the changes of Beijing’s air quality objectively every day. After two months, Zou Yi selected 64 photos he took and posted     4     (they) online. His move generated extensive discussion.

The fact that China is the first major developing country to combat PM 2.5 may sound unfamiliar to many,     5     most people have heard about the country’s action plan for preventing and controlling air pollution. China has also demonstrated firm resolve in carbon reduction and afforestation. As a result, clear skies and fresh air are returning to major     6     (city).

Days with good air quality accounted     7     87.5 percent of 2021, up 6.3. percentage points from 2015,     8    (make) China the nation with the greatest air-quality improvement worldwide.     9     number of the people who follow the daily air quality photos is     10     (probable) less than 10% of what it used to be. The less attention means that air pollution is not an issue anymore.

At 8,844.43 meters high, Mount Qomolangma is     1     (tall) mountain on Earth. While     2     is famous for its challenging hike, parts of the mountain are facing a problem: garbage. Every year, thousands of     3     (visit) throw away tons of trash, including soda cans (罐) and plastic bags.

According to the UN, over 140 tons of trash have been left on the mountain. To reduce trash, China is limiting the number of people     4     can climb the mountain’s north side. Only 300 people will     5     (allow) to climb it each year, and only during spring.

Local residents cleaned the mountain last year,     6     (remove) trash at a height of 5,200 meters. They     7     (collect) about 8.4 metric tons of trash, according to figures from the Tibet autonomous region’s government (西藏自治区人民政府).

This year, the local government plans to spend 4 million yuan       8    a new clean-up campaign, setting up stations to sort, recycle and break down garbage collected from the mountain.

In addition to trash, workers will also collect the bodies of     9     (die)   climbers. As of the 2019 climbing season, more than 300 people have died on Qomolangma, with 12 deaths this year.

A group of artists will try to turn some trash into artwork. They will show these works     10     (local), to remind people not to leave trash when climbing the mountain.