语法填空
阅读下面材料，在空白处填入适当的内容（1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 had run out of salt. So Nick called to his son, “Go to the village and buy some salt,        pay a fair price for it: neither too much nor 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          small village like ours,” Nick said.
Nick’s guests,          had heard their conversation, asked why they should not buy salt        (cheap) if they could. Nick replied, “The only reason why a man would sell salt at a lower price would be that 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 a 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.”