阅读下面短文，理解其大意，然后从各题所给的A、B、C、D四个选项中选出最佳选项。

I often went to a park near my home. I always saw a little boy sell1there. He tried to ask everyone to buy his flowers. When he saw2he always said, "Sir, buy a flower, please!"3l never bought any flowers from him.

One day, I went to the4.The boy was there again. I didn't5him and walked past him into the park. When I came out of the park, the boy was still there. But he didn't ask anyone to buy his flowers. I wanted to know6. I walked to the boy. He looked at me but didn't say7."Boy, why don't you ask people to buy your flowers today?" He8, "Because my sister is dead(死的). I don't need much9now. You can take a flower for free." I bought all his flowers. But I felt so sorry, because I didn't give him any10when he needed me.