Researcher Yuan Xin learned from a young age that to make a difference, he would need his brain to do     1    heavy lifting. A childhood accident cost Yuan Xin his right arm. Yet, the 27-year-old from a small village in Xianning city, Hubei province,     2     (take) it in his life and never looked back since then. With his     3     (remain) hand, Yuan has come up with unique designs and patents (专利)     4     have earned him more than 60 prizes and awards. “One of the most     5     (impress) experiences is winning second prize at the Challenge Cup in 2019,” says Yuan, who is now pursuing his doctoral degree in computer science at the Wuhan University of Science and Technology. By the way, the Challenge Cup contest     6     (found) in 1989 and is regarded among Chinese college students     7     the Olympics of science and technology. In fact, it is the influence of his family’s spirit of     8     (persevere) and an attitude of never giving up in the face of a challenge, that pulls     9     (he) through difficulties. “Although there might be many difficult situations and     10     (competition) to face, you will make progress as long as you work for it,” he says.

Mr Bolton had a big house with a beautiful lawn and a garden. His neighbor often came to visit his garden and Mr Bolton enjoyed    1    (hold) parties in his house. Sometimes, even visitors to the town came to his house to look    2    the lawn and garden.

Because of this, Mr Bolton was very proud of his lawn and garden and he spend all his time and energy taking care of them. But there was still one thing    3    bothered him -- the sidewalk. Some of the sidewalk’s tiles(地砖) were stained(沾了污渍的). Some showed    4    (difference) levels of wear and some just looked old. One day, Mr Bolton had    5    brilliant idea. “Why not paint the sidewalk?” he said to    6    (he). So he went to a hardware store and found some light grey paint. He bought the paint, rushed home and    7    (get) out a paint roller. And in a short time he had    8    (complete) painted the sidewalk. After the paint dried, the sidewalk looked as though it was brand new.

Mr Bolton thought the project was a great    9    (succeed). But there was one unexpected result that troubled him: His neighbors and visitors all walk on his lawn now because they don’t want    10    (make) the sidewalk dirty.

Most people dream of living in a big expensive house. But Tim Shea just wanted to find a place     1     could become his home.

This 70-year-old homeless man had spent several years living on the streets until he became the first resident of a village filled     2     3D- printed little houses.

Shea was chosen to be the first person     3    (move) into Community First Village , a 51- acre site in Austin, Texas. The small houses in the village , like Shea’s 400-square-foot home, were built by the Austin-based start-up company ICON.

Life wasn't easy for Shea before     4     (live) in Community First Village. He lived in an RV(野营车) for most of his life. This made     5    (he) stay away from people. “ I think from my     6    (person) experience of my former lifestyle, I developed a shell,” Shea said. “ I didn't feel secure(安心的)and any time I had the opportunity，I would hide.”

Luckily,    7    (thing) changed when Shea got his new house. Since then, he has been meeting new people and making friends. “Now everything I do     8    (be) just the opposite. I have many activities to do every day with others,” Shea said.

The houses     9    (design) by ICON have six different layouts (布局). Shea chose a home with an open floor. This way,     10     will be easier for him to use his wheelchair.

The sun was burning hot on July 26th. To seek shelter from the heat, two policemen went into a grocery store to treat themselves to a cold drink. As soon as they stepped into the store, the guard in the store walked towards them. The guard told them that he saw an ongoing crime (犯罪)     1     accident. A woman was hiding something in her bag secretly.

The policemen took the woman to the security office and searched her bag carefully. The woman didn’t seem like an experienced shoplifter (商店扒手). All they found was just some food, nothing else. She was obviously terrified, and her face was wet with tears. One policeman asked the other, “It     2     be the first time for her to steal something, isn’t it?” “To tell you     3     truth, I am in debt and I have been penniless for months. In addition, I’m suffering from severe     4     (starve) but I don’t have money for food. I should not have done such a thing,” she explained,     5     (seem) rather scared. She said that due to her being     6     (disable), she couldn’t earn her living.     7     (catch) on the spot, the woman thought she would be arrested (逮捕) undoubtedly. The policemen discussed how they would deal with the matter     8     (flexible). Then they reached a decision without any more discussion. One of the policemen said to the woman, “So far your bag     9     (check) and we have known something about you.” Then they accompanied the woman to a cashier desk, where they paid for this woman’s food and bought her other necessities out of sympathy. Then she was allowed     10     (leave). What they did really caused a hot discussion among people in the city.

We had two dogs, Lucky and Lily Bit. Either of them     1     (be) our favorite. Lucky loved much freedom and tried to find chances to leave the confines (束缚) of her indoor living routine. Our     2     (solution) to the problem were not useful. Lily Bit, on the other hand, did exactly as she was told to, never losing her way and always staying close to our home except when she came under the influence of Lucky.

Whenever the two got out together, on a regular basis, they could     3     (see) out of sight, often staying away for hours. More often than not, they d arrive home near suppertime, covered in mud and leaves.

I remember one time,     4     they once again mysteriously escaped, but this time they returned with clean bodies.     5     they could return with clean bodies was what we wanted to know. A few days later, my wife made an appointment to see our neighbor Carl, who lived in a house     6     (locate) not far from ours.

“I saw your two dogs the other day,” Carl said with a smile.

“Oh, yes? I’m so sorry. They have been so good lately, so it was such a surprise when they got out. I sure hope they didn’t cause any trouble,” my wife responded to his question. “Oh, no, no trouble at all. Did you have any idea where they went?”

“No,” my wife answered.

“They attended my dog’s funeral (葬礼). Their unexpected     7     (participate) in it always puzzles me,” Carl said.

“Oh, no. I didn’t know Toby had died,” Ann said,     8     (feel) so sorry.

“Yep, it died a couple days ago. He was buried in the back lot when your two dogs came running up. They sat down not far from me and watched     9     (intent). After I finished burying him, ultimately they left.”

“Wow, that’s amazing!” my wife replied. “Toby was Lily Bit’s father, you know. Now they can’t be reunited     10     each other.”

Our cat is dead. My daughter,     1     is just two years old, knows this. But she keeps asking where it’s gone and what has happened to it.

My parents     2    (be) straightforward m admitting they didn’t know what happened after our death when I asked them in my childhood. But I want to give my daughter a slightly     3    (good) answer to her question about the topic than     4    (they).

One day when she asked the same question, I told my daughter that the cat was out in the field, I told her that when animals, including people, died, they were usually put into the ground and that their bodies became     5    (variety) pretty flowers, grasses and trees. I passed my hand over her blonde hair, gently touched her rosy cheeks and checked her     6    (react). She didn’t appear     7    (trouble). Instead, she seemed excited by the thought of one day becoming a flower.

Then, I reached     8     my daughter’s hand and asked her     9    (take) a walk in the field. Together, we saw new leaves growing in the sun and pretty flowers waving in the gentle wind. Suddenly, I realized that although we were bound to become plant fertilizer, we were not the lonely humans aimlessly wandering in the world. We were a part of the earth. We were connected by the beautiful plants in     10     field.