阅读下面短文，从短文后所给的A、B、C、D四个选项中， 选出可以填入空白处的最佳选项。

    My friend Samuel, who is a good runner, and I ran a 5K race last weekend. It was my first organized1. “You run ahead,” I said at the starting line. “You2?” he asked. “Go!” I said. “I'll see you at the3”

    Samuel took off, strong and full of energy. My4 hit the ground in a familiar pattern, and I5 it to the half-way point. My legs started to6 and my back hurt. 7, I wanted to give up but my spirit told me not to. I started to think I should have8 a shorter goal as the great distance was too much for me. I began to9 deciding to run the 5K race. I thought about all this while running. The road seemed very10.

    11 I ran along, my feet felt like lead(铅). It seemed as if I would 12 make it. I was so tired that I couldn't move a step further. I tried to13 myself by sayings. Some words appeared in my mind. They were “Do 14 by halves” and “To persevere(坚持) means victory”. They were 15 and they filled me with fresh energy. Anyway, I wouldn't quit. I 16 along. I eventually saw the white tent by the finishing line.

    Samuel was at the finishing line. When I 17 at the end, he put his arm around my shoulders and18 his hand for a high-five.

    I realized that19 you never give up, the goal you set can be reached. Above all, you just have to be20 and take one step at a time.

    Mother's Day, 2017 was the last time that all my three kids would be kids at home. I was 1 a Mother's Day to remember.

    That morning, I got up early and left for2 since I was the math teacher in the same school with my boys. The boys and I were going3as usual, so I expected the time I'd have with the three of them surrounding me during break. I entered the office after my class4the crowd for their faces. I didn't find the boys, but wasn't too worried5their classes often ran late. I found a row with plenty of room for all four of us6seats for my handsome young men.

    The longer I sat there, the more7and angry I got. How could they 8their mother on this of all days? I couldn't9my work, only on how I'd been wronged10the time the last morning class ended, I could hardly wait to get home and give them a piece of my mind.

    Arriving home, I noticed a pile of roses on the ground. I looked closer and saw the roses were the11of a track made from fresh flowers, which led to our room. As I 12the flowers, the door got opened and three 13faces greeted me. They let me see what they'd been working on all14.

The words were 15the entire floor, “Happy Mother's Day, We Love You. ”They were placed with16.The space was 17with sweet of roses and other flowers. They'd asked for a(an)18and worked all morning, gathering fresh flowers and arranging them into surprise message.

    I immediately realized I'd been much too hurried in my19of the situation. While I had been feeling unloved, they'd spent their time writing a 20to show how much they really cared.

    Some years ago on a hot summer day, a little boy decided to go for a 1 in the lake behind his house. In a hurry to dive into the 2 water, he ran out of the back door. He flew into the water, not3 that an alligator （鳄鱼）was swimming toward the 4. His mother in the house was 5of the window and saw the alligator  6 it got closer and closer. In fear, she ran toward the water, yelling to her son as 7 as she could.

    Hearing her voice, the little boy became 8 and made a return to swim to his mother. It was too9.Just as he reached her, the alligator 10him. From the shore, the mother grasped her little boy by the arms just as the alligator grasped his legs. The alligator was much 11 than the mother, but the mother was much too struggling to let the boy go. A farmer happened to drive by, heard her 12raced from his truck, took aim and13the alligator.

    14 after weeks in the hospital, the little boy15 His legs were scarred by the animal and, on his arms, were 16scratches where his mother's fingernails scratched. A newspaper reporter, who 17 the boy, asked if he would show him his18 The boy lifted his pant legs. And then, with obvious 19 he said to the reporter, “Bot look at my arms. I have great scars on my arms, too. I have them because my mom wouldn't let me go. They are my mother's 20 for me.”

    I was doing a year of voluntary service abroad for people with learning disabilities. It was set in an English 1 ， quite different from my home in Sweden.

    One of my fellow 2 ， a girl from Tanzania, seemed a bit 3 ， so I asked what the problem was. She told me she had a 4 back home who was really 5 with her university studies. It seemed that 6 difficulties would make it impossible for her to complete her course. So this friend of 7 had done something unbelievable: she had sent all her pocket money for the month to Tanzania to 8 her friend! This meant that she didn't have much food to eat and had no money to go anywhere outside the village.

    I was so 9 that she did this for her friend and I felt I had to do something. 10 ， during my next trip to one of the ear by towns I walked into a shop to buy some food for her. I started 11 to the woman working in the shop and 12told her about my friend. The woman looked at me, 13."Does she eat pasta (意大利面)？" she asked."Yes，" I replied. She immediately 14 loading a bag with pasta, cookies, sweets and other things until the bag was full."Give this to her for me. It's my15！" I couldn't believe it but cried with 16.

    Imagine my friend's face when I 17 the gifts on my kitchen table and 18 her from her room to see! I have 19 seen her so happy! She told me that due to the generous help, she could definitely 20 the month.

    I shopped today. While I was1at the grocery store, a woman followed behind me. She was standing by one of those shopping carts with the2in front. The basket held just a few3: some apples, corn, a loaf of bread, some canned goods, and a bunch of beautiful coral colored roses. Several times I4her looking at those lovely roses and5. I told her that they were, indeed, very lovely roses. She said, "I really do love them, and they're my6color."

    Well, just as I was 7, I heard her say to the 8, "You can put those roses back. I really couldn't 9 them." I turned around and asked her if she would allow me to get them for her. She10her head and said, "Why would you want to do that? You 11 don't have to." I replied that I just wanted to especially since she12them so much. She still seemed hesitant so I told her that she would be doing me a great kindness if she would13me to gift them to her.

    With tears in her eyes, she14and said, "I really do love them. Thank you."

    On the way home I was reminded of a 15I had heard decades ago and I've loved it ever since. The song is Bread and Roses. It's a 16 song on many levels and reminds us that we all need food, but we all also need 17.

    A line from this song fits this18 perfectly, I thought. It reads: "19starve as well as bodies. Give us20, but give us roses, too."

    One Saturday afternoon, my mother was driving home. On the halfway, after1her credit card to buy something at the store near the gas station, she put her wallet on the top of the car just for a moment to2my phone call. And then3, she forgot and drove off. When arriving home, she realized that and thought that the4of getting it back was small.

    She was so5surprised when she found a6on the door from a person who said he and his friend found her wallet a few hours earlier. Patrick and Catherine saw the wallet in the middle of the road a few7from the gas station. They stopped their car to8. It was filled with all the things one usually kept in a wallet, including some9and other cash. However, no phone number,10this, they managed to get a（an）11from my mother's driving license, and without hesitation, they decided to drive to our home to12it.

    When my mother went to get the wallet she was so13and grateful. She14to give them some money as a（n）15of gratitude, but they refused, saying that they were just glad to16my mother help.

    They were naturally17, and they had a firm18in the Golden Rule as well. They drove over to my house because they realized the unpleasant and upset experience that the loss of a wallet and all its contents could19. I think they were really20and helpful.