[完型填空] Nora was sixteen years old. She had a little brother. His brother's name was Jim. Jim was...

[完型填空]
Nora was sixteen years old. She had a little brother. His brother's name was Jim. Jim was sometimes naughty(淘气的),but he made Nora laugh a lot, and she loved him and was always very nice （ 1 ） him. One afternoon she was walking from her house to the store when she saw a small boy running along the street towards her, he was going very fast. When he came （ 2 ） her, she was surprised to see it was Jim.
“Hi. Jim” Nora shouted at him, “ （ 3 ） are you running like that?”
Jim did’t stop, but he waved to his sister and shouted, “I’m trying to stop two boys （ 4 ） fighting.”
Nora was surprised again. She laughed and said, “That’s an important job for a little boy,isn’t it ? You don’t do things （ 5 ） that very often. Who are the two boys?”
“They’re Tom and me,” answered Jim as he continued running down the street very quickly. 5. ____