题目内容：

Recently a really strange thing happened in a middle school in China’s Hubei Province. Over 600 students there took part in a “caring for an egg like a baby”1.(active) in which they were asked to keep an egg close at hand for a month2.breaking it.

"It's hard for parents to bring up their children,3.many students just ignore it,” said Liu Kang, the school's director. "They shoule4.(teach) to be grateful to their parents, who have given them life but ask for nothing in return.”

Li Ming is one of the students. His egg didn't break during the month, but he felt5.(exhaust). "I now realize that my parents have had great difficulty6.(bring) me up I’ll do all I can to make their life easier and more7.(comfort) when I grow up,” promised the 13-year-old boy.8.(luck), about 450 students broke their eggs. Yan Yueming broke his egg after just five days, which made him frustrated. He said, "I can't imagine9.sad my parents would be if there was something wrong with me, their 'egg'!" It is time I10.(do) something in return for their love.” said Yan.