阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。

    "It's over! Thank goodness!" school was 1 and I was tired. I 2 at the front of the school bus.

    Janie, the driver, tries to 3 the uncomfortable atmosphere by striking the match of talks. I try to listen politely, but usually I am too busy thinking about my day. On this day, however, her talk was worth 4.

    "My father's ill ," she said to no one in particular(特别地). I could see worry in her 5. I had never seen her like this before. She always meets students 6 a smile.

    With a sudden change of interest, I asked, "what's wrong with him?"

    With her eyes wet and her voice unusual, she answered, "Heart trouble." Her eyes lowered as she continued. "I've already 7 my mum, so I don't think I can stand losing him." I couldn't answer. My heart ached for her.

    I sat on the 8 thinking of the great pain my own mother was thrown into when her father died. I saw how hard it was, and still is, for her. I wouldn't want to anyone to go through that.

    Suddenly I realized Janie wasn't only a bus 9, that was just her job. She had a whole world of family and cares 10. 

    I suddenly 11 very selfish. I paid no attention to Janie because she was a bus driver. I had judged her by her job and brushed her off as unimportant.

    I shouldn't have been so selfish and self-centered. 12 people is an art.