题目

I am a 17-year-old college student. Something I came across today touched me , so I decided to   36  it . After a long and boring morning at college, I was  37      at the bus station for my bus. While standing there, I was thinking about how   38   the week had been when this gentleman came and stood next to me. After a while he    39   talking to me, mainly about the buses and bus drivers. He had     40  noticed that I was feeling down, as he told me to cheer up and told a  41   . This then turned into a happy   42   as we waited for the If you _______ first aid correctly, the man would be saved. [　　] A．knewB．do C．gaveD．took