After the birth of my second child，I got a job at a restaurant.Having worked with an experienced 16for a few days，I was 17to wait tables on my own.All went 18that first week.When Saturday night came，I was luckily 19the tables not far from the kitchen.20，I still felt it a little hard to carry the heavy trays （托盘）. Before I knew it，the 21was full of people.I moved slowly，22every step.I remember how 23I was when I saw the tray stand near the tables；it looked different from the one I was 24on.It had nice handles（手柄），which made it 25to move around.I was pleased with everything and began to 26I was a natural at this job. Then，an old man came to me and said，“Excuse me，dear，my wife and I loved 27you work.It seems your tray stand has been very 28to you，but we are getting ready to 29now，and my wife needs her 30back.” At first his 31did 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 32.I wanted to get into a hole and 33. Since then，I have learned from many mistakes such as the one I just 34.I have learned to be more 35and not to be too sure of myself.34选（）