A young American woman worked in a school in Shanghai．     she came to China，she knew little about the Chinese culture of language． One day on her way to school，she went to a bank     (draw) some money．To      surprise，the bank clerk(职员) asked her if she had had her lunch．She was surprised at such      question because in the American culture it would mean that the bank clerk is inviting her to lunch．Between unmarried young people it can also mean the young man’s interest in dating the girl．Since this bank clerk      (be) a stranger to the American woman，she was very puzzled(困惑的)，and quickly answered that she had      (eat) already．After this she went on to school and was even     surprised when one of the teachers asked her the same question．
By now she understood that it could not be an       (invite) but was puzzled as to why they asked it．In the following days she was asked the same question again and again and she spent many hours     (try) to work out why so many people kept asking her this．At last she thought that these people must be     (concern) about her health．She was rather thin at the time，and she thought they must be worrying that she was not eating well!
In fact the question like that has no real meaning at all — it is only a greeting．