阅读下面短文,从每小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。
A few days ago, my husband observed a teenager doing yard work that his dad had told him to do. Instead of doing the task1, he wandered around there for hours, doing a 2 job.
The person he hurt the most was himself. His dad was trying to teach him 3and how to do a good job. As a result of his 4 attitude, he spent the whole afternoon finishing a task that should have taken one or two hours. And the yard 5wasn't clean enough when he got through.
He ruined his day because of his attitude. In addition,his dad was upset with him, and the boy's bad mood ended up 6the whole family that day.
Contrast that with a sweet lady working in a fast food 7. The minute I walked in, she welcomed me 8. She smiled as she took my order, and then as we 9 the food, she talked with me. As I walked off with my tray, she said with a big 10," I hope you have a blessed day!" I thought the food tasted better because of her 11. There was a delay, during which I sat there hearing her singing as she 12 her tasks behind the counter.
She wasn't making a large 13, and she didn't have a powerful position either. In addition, she stood on her feet for a long shift each day, often dealing with difficult customers. But she chose to be joyful.
I want to learn from her. I want to do my best, even when there's no applause or glory. Other people are watching me even though I might not 14 it at the time. I want to bring joy to all those around me. The 15can make a great difference.