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。
Ever since an accident put him in a wheelchair, Dan has had one dream:1.
That is why he was 2 to learn about a piece of research that could possibly lead to his 3. But there are two 4. First, the research may take years before it becomes a treatment. And the second is the most 5 of all considerations: money.6by love for Dan, friends worked hard through a series of 7 to raise 20,000 pounds for his future surgery. Dan felt he could really start looking forward to the day when he could turn his 8 into a reality.
Then he 9 Brecon, a 5-year-old who 10 from cerebral palsy (脑瘫). Dan read about a new surgical operation that could 11 the little boy to walk unaided. But the surgery would 12 more than 60,000 pounds --- money Brecon's parents were having a 13 time raising.
Dan said, “I'm in pretty much the 14 condition, but it appears that Brecon can 15 walk if he gets his surgery, and I can't right now. So I thought I might as well pass the money on to him. I'm 16 to everyone who has helped me out, but this boy needs it 17 I do at the moment.”
And so he took this dream out of the bank and 18 it over to Brecon's parents, telling them, “It would make me very happy to see the 19 made to Brecon's life.”
“I wanted to help someone whose life could get better,” he said. “If I can help someone to walk, I will. Even if it means 20 a dream to do it.”
