题目

    I realize that we all live in a world where trust is in short supply. I' seems that everywhere I go, I have to  41  my identity and trustworthiness-whether it's a bank ,shop or any office I have Been accustomed to living by the  42  that no one is trustworthy  43  proved otherwise. Yesterday l saw a young man who lived by a totally  44  rule   1 was waking along a busy intersection when I  45  a young man standing near。the pedestrian crossing setting up a stall（货摊）.  46  I would ignore and hurry past such sellers But I noticed this young man was  47   Mary made coffee ____ her guests were finishing their meal. A. so that    B although    C. while    D. as if