Every fast-food employee knows that the drive-through window is the worst position. The window sticks with constant ice; the roar of engines hurts your 1; your words are lost in the howling wind.

    On a 2 afternoon, everything changed.   

    Every once in a while, the sub-zero temperatures seal a 3 windows shut. Drivers don't exactly enjoy having to stand outside in the cold, 4 their orders into a speaker box, when they expect to drive through on their heated leather seats. In such cases, most customers tend to show their annoyance to the employees.

    This woman was 5.

     “I'll get the next car's 6 a s well,” she said as she came up to the window to pay. She stood outside, 7 much snow on her hair. Though she was obviously freezing, her bright 8 lit up her face like a fire.

     “You can't 9 their drinks,” I said, confused and tired.

     “No, but I'll buy them,” she said. “Pay it forward and all that.”

    Completely puzzled, I charged her as 10, and when the next customer arrived at the window I explained what had just happened. I watched as his 11 changed — first angry to be out in the cold, then 12 at the random act of kindness, and finally, delighted by his 13.

     “I suppose I'll pay for the next order then,” he replied, nodding and waving at the impatient driver 14 him. He 15 over the cash and received his pre-paid hot drink.

    The trend continued. Customers arrived annoyed, only to leave 16 and pleased. Some were shocked to spend much more than they had expected, 17 others ended up receiving their order for less than half the price.

    Five vehicles passed, then ten, then twenty. No one refused to pay. Customers stood at my window 18 a fist-full of change to buy drinks for a complete stranger. Cars drove off, honking (鸣笛) and 19 their thanks.

    It only takes one customer, one person, to change the entire 20 of traffic. It only takes one moment, one smile, to warm up even the coldest of days.

    It was the end of the week at the village school. The bell had rung, and the children had run out into the bright sunshine, wild with laughter and fun. All were happy but poor Davy. He came out last and very1. He was in trouble, and the bright, golden sunlight did not make him2. He walked across the yard, and sat down on a stone behind the old maple. A little bird on the highest branch sang just to make him3. But Davy did not notice it. He was thinking of the4words that had been said about his ragged clothes. The5stole out of his eyes, and ran down his cheeks. Poor little Davy had no6, and his mother had to work hard to keep him at school all by herself. He did not wish to trouble his mother; so he 7among the trees , and at last threw himself on the green moss under them. Just then his beloved teacher Mrs. Smith came8. She saw who it was, smith stopped to ask what was the9 . Davy did not speak, but the tears began to start. Mrs. Smith waited patiently10Davy told her all his  trouble. When he ended, she said11, “Davy. I have a plan which I think will help you.” “Oh , what is it ?” He said, sitting up with a look of 12while a tear fell upon a blue violet. “Well, how would you like to be a little flower13? And earn money?” “That would be jolly. But where shall I get my flowers?” he asked. “14, my boy, the answer to the question is just right in there15.” said Mrs. Smith. “Here are lively blue violets, down by the brook are white ones, and among the rocks are ferns and mosses. 16them all to my house, and I will help you17them.” Davy nodded and went home happily. Day after day. Davy hunted the woods for the18flowers, and the most beautiful ferns and mosses. After his teacher had helped him with new clothes. But for the19, and sold them. He soon carted enough money to buy new clothes. But for the20of his teacher, he couldn't have solved his problem. Now he could see the bright sunshine and hear the bird's singing.

    Mr. Glen is a millionaire. Five years ago, after returning from abroad to his motherland, he 1 his small company. Speaking of success, Glen often tells us a story about his extra expensive “school” fee. He always 2 his success to it.

    At that time, Glen, who already got a Ph.D. degree, 3 to return to the homeland, starting a company. Before leaving, he bought a Rolex watch with the 4 made through years of work after school and the scholarships. At the airport he had to accept the 5 customs check. The watch on his wrist was also demanded to be taken down for 6. Glen knew that carrying the specific goods out had to pay the tax, and he worried about paying 7 for his watch. So when he was checked, he told a lie that his watch was a 8 fake（假货）. When he was 9 of his “smarts”, immediately, in the presence of Glen, the officers hit the watch, 10cost nearly 100,000, into pieces 11 hearing Glen's words. Glen was 12 . Before he understood why, he was taken to the office to be examined 13 . For many times of entry-exit 14  he knew that only those people in the “blacklist” would “enjoy” this special treatment. The officers looked over everything carefully in the box, and 15 him no matter what time of entry and exit he must accept the check and if 16 reusing and carrying fakes, he would be 17 according to law! Suddenly, his face turned red, and he had nothing in mind after boarding the plane for long.

    After returning to the homeland, he often told the story to his family, and his employees, too. He said that this made a deep 18on him, because the additional high “school” fee that he had ever paid made him realize the value of 19, which he would remember as the 20 of his success forever.

    Paen Long has had a dream ever since he saw a plane for the first time at the age of six. His dream was to 1 a plane. Last year, the 30-year-old man started building his plain 2. “I was afraid that people would 3 me, so sometimes I worked at night,” he said. It was a long time 4 he put his dream into practice. Finally, Paen Long decided to try to build his own plane, using the money he had 5 from running his own garage. He has spent three years 6 YouTube videos in order to 7 how to make a plane.

    It took him a year to build his plane, using mostly recycled materials. The plane's first 8 came at 3pm on 8^th, March. Local villages gathered excitedly to watch the plane fly. 9, the plane only got 50m in the air before crashing (撞击) to the 10. “When all people were looking at me, I felt very 11,” he said.

    Although the first try 12, Paen Long remains 13. His next project is to build a seaplane. Paen Long thinks the plane will cost over $10,000. “I never feel 14 for spending all my money building a plane,” he said.

    His wife, Hing Muoyheng, 15 about her husband, especially as they have two young sons. However, she has no 16. “I don't know how planes work and he doesn't have any 17 to help him. He can only search for information himself,” she said. “I tried to ask him to 18 a few times because I was afraid, but he said he wouldn't 19, so I have to support his 20.”

    It was an extraordinarily busy time of year. I felt some 1 to head straight home after a long meeting. So I headed to the 2 nearby for some therapeutic (治疗性的) hiking. As I reached the top and admired the view, my unclear mind 3. Re-energized, I knew that I could deal with the 4 that waited for me upon my 5. When I arrived back in the office the next day, I was full of energy, and finished my work 6.

    It was almost 20 years ago that I learned how 7 it is for me to carve out time to escape to the wild. I had finished my Ph.D. , 8 soil and water conservation in Honduras, but I wasn't sure what 9 I wanted to have. So, I decided to act on a dream I had been nursing for a few years, 10 my mom showed me a magazine article about a man who had 11 around America. I figured that I could 12 cycling with research for a book on American agriculture while I worked out my next career step.

    So I did it. During the cycling 13, I found the clearness I needed to 14 my next career move. Talking with farmers I met along the way, I learned that their biggest 15 was selling their produce. I decided to broaden my 16 from land management to improving farmers' access to markets. My 17 interest led to working for a nongovernmental organization and I did eventually 18 a book on. American agriculture.

    The 19 is to find your source of inspiration and make good use of it. For me, I always get nourishment (营养) from being 20 in the outdoors.

    When you are five years old, your mother is your everything. She is your1, friend, nurse; the only person you rely on2with your hopes, dreams, and wishes. But for me, this was not the case.

    My mother suffered from 3problems that would keep her in bed for days, leaving me to care for her and look after myself. This situation4me to grow up much faster. While I knew my mother was sick, I felt deep down that we could5it and everything would be okay. 6, in 1997 everything went terribly wrong, and my life changed forever.

    Adoption is a7word to a five-year-old, but when I realized that my own mother had signed me over to8, I felt it was the worst betrayal. I suffered from shock, anger, and confusion as I attempted to adjust to my new family. No longer could I trust anyone since the person I had loved more than all else had9me. Hearing people tell me that she did it in my best interest, I felt it even more10. I could not forgive her and always11 how she could reject me like an old sofa.

    However, the more I got older, the more I began to understand how12 our situation had been. We had been13 on boxes of noodles, and at one point we14 lived in our car. I was once passed from drug-addicted cousins to mentally unstable neighbors as my mother15 to try and save me from what our lives were becoming16 each day passed.

      17 recently have I begun to understand why my mother gave me to strangers.    18, she really did save me. She loved me more than anything, so she wanted me to have a chance in life, 19 she could no longer offer me. I now know my life has been a special 20only because she was selfless enough to give me up.