阅读下面短文，根据短文内容，从方框中选出恰当的单词，将其正确形式填入短文空白处。（每词限用一次）

what, pull, another, with, some, found, still, decide, success, teacher

A professor(教授) told his students to go into the city slums(贫民窟) to study the life of 200 boys. He asked them to write reports about each boy’s 1ife and future. One of the students wrote, “They don’t have      hope．”
Twenty-five years later，  professor read about the earlier study. He told his students to find out      had happened to the boys. They tried very hard and      that 176 of the boys had become successful as doctors, teachers and scientists.
The professor was very surprised and     to study it further．Luckily, all of them were living near the place and he was able to ask each one, “What made you successful?” Each one answered, “It was a     .”
The teacher was     living there, so the professor found her and asked the old woman what she had done to      those boys out of the slums, and change them into     people.
The teacher’s eyes began to shine and said      a sweet smile, “It’s really very easy. I love those boys.”