题目内容：

语法填空。

Many years ago, when I worked as a volunteer at Stanford Hospital, I got to know a little girl 1. Liz who was suffering from a rare and serious disease. Her only chance of recovery appeared to be a blood transfusion（输血） 2. her 5-year-old brother, 3. had miraculously survived the same disease and had developed the antibodies needed to fight the 4.(ill).

The doctor explained the situation to her little brother, and asked the boy if he would be willing to give his blood to his sister. I saw him hesitate for a moment before_5. (take) a deep breath and saying, “Yes, I’ll do it 6. it can save Liz.”

7. the transfusion progressed, he lay in bed next to his sister. 8.(see) the color returning to her cheeks, he smiled. Then 9. face grew pale and his smile disappeared. He looked up at the doctor and asked with a trembling voice, “Will I start to die right now?”

Being young, the boy had_10.(understand) the doctor; he thought he was going to have to give his sister all of his blood.