Read the following paragraph and underline the topic sentence.
Before leaving home, I made certain I followed the right dress code. It was a long drive to the interviewer's office, and more than once I thought of being rejected. Then there was the difficult time as I sat in the outer office, nervously waiting my turn. I remember tapping my feet, shifting in the chair, and trying to read several magazines. Finally, my name was called. I took deep breath and walked stiffly(僵硬地) into the office. The interviewer asked many questions, keeping her eyes directly focused on me all the time. After what seemed like hours, she indicated I could report for work the following Monday. I shall never forget the morning when I had my first job interview.