暴风雪中，他守护了陌生的孩子（语法填空）
Ambrose is a bus driver. One snowy day in February, he got his chance to help someone who ___1___ (true) needed it.
Ambrose had just finished his route and was turning his bus around ___2___ he saw something unusual. A boy who Ambrose ___3___ (estimate) was between 4 and 6 years old was wearing a school backpack and standing on the snowy sidewalk, all by ___4___ (he) .
Ambrose knew that school ___5___ (cancel) that day due to the weather, and he couldn’t figure out any other reason why a child would be alone in a snowstorm. When he saw the child ___6___ (attempt) to get into a car and then falling in the street when the car drove away, he knew the boy needed his help.
“I could tell the child was very anxious,” Ambrose recalled. “He was non-verbal and difficult ___7___ (communicate) with, but I kept an eye on him and kept talking to him.”
Ambrose got the child safely onto his bus, then called his supervisor at the Transit Control Center. They checked missing child reports in the area, and there it was: a missing 9-year-old with autism (自闭症) ___8___ wandered away from home about 15 blocks away, in north Minneapolis.