题目内容：
根据下列材料，请回答题After the birth of my second child, I got a job at a restaurant. Having worked with an experienced 36 for a few days, I was 37 to wait tables on my own. All went 38 that first week. When Saturday night came, I was luckily 39 the tables not far from the kitchen.
40 , I still felt it a little hard to carry the heavy trays(托盘). :
Before I knew it; the 41 was full of people. I moved slowly, 42 every step. I remember how 43 " I was when I saw the tray stand near the tables. It looked different from the
one I was 44 on. It had nice handles, which made it 45 to move .around. I was 46 with everything and began to 47 I was a natural at this job.
Then an old man came to me and 48 , "Excuse me, dear, my wife and I loved 49 you work. It seems your tray stand has been very 50 to you, but we are getting ready to
51 now, and my wife needs her 52 back. "
At his his 53 did not get across. Then, I got it. I had set my trays on his wife' s orthopedic walker(助听器). My face was 54 I wanted to get into a hole and 55
A．manager
B．assistant
C．cook
D．waitress
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答案解析：