通读下面短文，掌握其大意，然后从每小题所给的四个选项中，选出一个最佳答案。Harries, a 25-year-old nurse in a hospital. One evening there was a big dance at the hospital.
Most of the doctors and nurses would be there. But someone must be 1 to look after the sick children. Harris liked dancing, but she had to work and couldn't go there. She felt 2 . Harris went to each sick 3 one after another and said good night. One little boy of 11, David was able to say good night 4 an adult. He was serious ill, and he could 5 move any part of his body except his hands. Harris knew he would never get any better, but he was always happy and was always 6 about others instead of himself.
David knew that Harris loved dancing, 7 he greeted her with the words,"I'm very sorry that you have to 8 the dance because of us. But we are going to have party for you. Look there is a piece of cake. I saved it from my 9 this evening, so it's quite fresh. And there's also a dollar there. You can buy something to drink with that. I'd get 10 and dance with you myself if I was able to." he added.
Harris was moved and wasn't unhappy any more.
