阅读下面材料，在空白处填入适当的内容（不超过3个单词）或括号内单词的正确形式
One day, Nick invited his friends to supper. He was cooking some delicious food in the kitchen. Suddenly, he ______(find) that he has run out of salt. So Nick called to his son, “Go to the village and buy some salt, but pay a fair price for it: neither too much ______too little.”
His son looked surprised. “I can understand why I shouldn’t pay too much, Father, but if I can pay less, ______not save a bit of money?”
“ That would be a very ______(reason) thing to do in a big city, but it could destroy a small village like ours,” Nick said.
Nick’s guests, ______had heard their conversation, asked why they should not buy salt more cheaply if they could. Nick replied, “The only reason a man would sell salt _____a lower price would be because he was desperate for money. And anyone who took advantage of that situation would be showing a lack of respect _____the sweat and struggle of the man who worked very hard to produce it.”
“But such a small thing couldn’t _____(possible) destroy a village.”
“In the beginning, there was only _____very small amount of unfairness in the world, but everyone added a little, always _____(think) that it was only small and not very important, and look where we have ended up today.”