请用适当的词完成下面的短文，并把所缺单词填写在答题卡指定的位置上。每个空只能填写一个形式正确、意义相符的单词。

Mr. Chuck teaches Human Relations at Bakersfield College. One day, he walked 【小题1】 the classroom and told his students that their homework was to do a random（随机的）kindness. His students did not understand the homework, but the professor did not 【小题2】 their questions. He encouraged his students to find it out by 【小题3】. One week 【小题4】, the students entered the classroom excitedly and shared their stories with their classmates. One student 【小题5】 that he had given his blankets to the homeless, and another student told them that he helped a dog to find its owner. All students 【小题6】 encouraged by the homework. So the students made some stickers（贴纸）which people can stick on their cars, and then sold them, 【小题7】 they can donate the money to the homeless. Since then, similar activities have been organized in schools all over the 【小题8】. Some schools encouraged their students to perform 【小题9】 acts of kindness, such as helping doing community service or raising money for a charity.

Students learn to consider other people and think about how small actions can also make the world 【小题10】 better place.