题目：
| 完形填空。 | ||||
| After the birth of my second child, I got a job at a restaurant. Having worked with an experienced 1 for a few days, I was 2 to wait tables on my own. All went 3 the first week. When Saturday night came, I was luckily 4 the tables not for from the kitchen. 5 , I still felt it a little hard to carry the heavy trays (托盘). Before I knew it, the 6 was full of people. I moved slowly, 7 every step. I remember how 8 I was when I saw the tray stand near the tables; it looked different from the one I was 9 on. It had nice handles, which made it 10 to move around. I was pleased with everything and began to 11 I was a natural at this job. Then, an old man came to me and said, "Excuse me, dear, my wife and I loved 12 you work. It seems your tray stand has been very 13 to you, but we are getting ready to 14 now, and my wife needs her 15 back." At first his 16 did not get across. "What was he talking about!" Then, I got it. I had set my trays on his wife's orthopedic walker (助步器). I stood frozen as ice, but my face was 17 . I wanted to get into a hole and 18 . Since then, I have learned from many mistakes such as the one I just 19 I have learned to be more 20 and not to be too sure of myself. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
答案：D
