题目内容：
根据下列材料请回答题：This was one of my experiences 16When I was in my 30s, I was working for a large international company which had its head office in London. I was working in the17department.
The company had a training centre which was just outside London. Different courses were held there throughout 18and I 19go on one training course a year. These usually started 20 a Sunday evening and lasted six days.
Once I was 21a week's training course with about forty 22 sales people. I was in the bar on the Friday evening and suddenly a woman who was 23 behind the bar asked me a curious question. "I hope you don' t 24 my asking, " she said, "but I've been 25about it all
week. Have you got a sister 26 Mary?" The woman' s name was June. And she used to do various jobs at the training centre. She worked in the office, she organized all the food and drink for the centre and she worked in the bar at lunchtime and in the evening.
My answer 27 June's question was "Yes", and June said, "I thought 28I met her last September when she was organizing a course here. " At that time, my sister was working for29 company but in a different part of the country. That was 30 she came to be at the training centre.
31__ surprised me was how June guessed we were brother and sister. Three things made it even more 32 . First, she had met my sister six months before she met me. Second, they have about sixty new people every week at the training centre. So about one thousand five hundred people had 33the centre in those six months. And 34 , my sister is married, so she doesn' t have the same family name as me.
We're not___35____, but I guess we must look quite like each other.
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