答案：FTFFT
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分析如下：
F ——I've been in the taxicab business for thirty-fiveyears,
T ——I came to this country in 1913 where I held several jobs toearn a few dollars before enlisting in World War I. After being discharged, Ibought my own cab and have owned one ever since.
F ——I always try to be nice to everyone.——只是尽力对每个人友善，但是不是一定。
F ——I believe honesty is one of the greatest giftsthere is.……This is my code, and I try to live by.——只是尽力，不是一定
T ——Because taxi drivers are tough, people get the wrong impression that they are bad.
