A little boy invited his mother to attend his school’s first teacher-parent meeting. To the little boy’s disappointment(失望), she said she would go. This would be the  16  time that his classmates and teacher met his mother and he  17  lose his face because of her appearance. Although she was a  18  woman, there was a scar(疤痕) that covered nearly the whole right side of her face. The boy never wanted to  19  why or how she got the scar.
At the meeting, the people were   20  by the kindness and natural beauty of his mother even though she had the scar on her face, but the little boy was still embarrassed(尴尬) and hid himself from everyone.   21 , he happened to hear of a talk between his mother and his teacher.
The teacher asked  22 , “How did you get the scar on your face?”
The mother replied, “When my son was a baby, he was in a room that caught fire. 23 was too afraid to go in because the fire was  24 , so I went in.    25 I was running toward his bed, I saw a long piece of wood  26 and I placed myself over him trying to protect him. I was knocked senseless(失去知觉) but luckily, a fireman came in and saved both of us.” She  27 the burned side of her face. “This scar will be there forever, but to this day, I have never  28 what I did.”
At this point, the little boy came out running toward his mother with  29 in his eyes. He held her in his arms and felt a great sense of the sacrifice(牺牲) that his mother had made for him. He held her hand  30  for the rest of the day.