Sentence:  Somewhat to his surprise he found that one girl , whom he would never have considered for the <WSD>job</WSD> since she had appeared somewhat mousy and also had been in the office a relatively short time , did the most outstanding job of playing the role of receptionist , showing wit , sparkle , and aplomb . 
Meaning of the word marked with <WSD> tags:  the principal activity in your life that you do to earn money