阅读下面短文, 从短文后各题所给的四个选项中, 选出可以填人空白处的最佳选项, 并在答题卡上将该项涂黑。
The other day I decided to come home early because it was such a beautiful day. The 41 were outside playing in my apartment complex (公寓大楼) and the ice cream truck was whistling its tune. As I 42 slowly to avoid an accident, I noticed a little boy 43 at the ice cream truck. He didn’t get anything and he walked away with a 44 look on his face. I asked the ice cream seller what happened and he said the little boy had no 45. I had no cash on me so I drove to my building and went upstairs to 46 some cash. When I found it, the ice cream seller was 47 waiting but the little boy had 48