阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。

After a long day at the office, I drove home and looked forward to relaxing with a nice cup of tea. While   ①   on my way, I noticed that a crowd had gathered around someone who was lying on the ground. 

I had completed a first aid course with the British Red Cross, so I pulled over to see if I could offer any ②    . There was a first aid kit in my car, so I took it and walked to the  ③   . It turned out the girl had been  ④   by a car. People who stood around her looked  ⑤   and they didn't know what to do at all. They had not even   ⑥   to call for an ambulance yet. 

So I called the emergency services and explained the actual situation. I was  ⑦   about the girl because she had not been wearing a helmet when she got  ⑧   . I was not sure if there was a spinal (脊柱的) injury, so I daren't   ⑨  her. But after looking her over, I was sure she wasn't

    ⑩   injured. Then I dealt with some scratches(划痕)in her hands. 

As time passed and we continued to wait for an ambulance, the amount of pain that the girl suffered was increasing. To distract(转移)her and  ⑪  the risk of her going into shock (休克), I talked to her ⑫ . We talked about her boyfriend, football, the weather, pretty much anything that I could think of to keep her mind off the ⑬ . 

Finally, the ⑭  came and the girl was taken away. I felt ⑮ at the news that the girl was safe at last. I felt I had made a difference.