21．We all know that in our lives，we never stop learning.In fact，there are those individuals who continue at an advanced age to learn new concepts，new information，and new skills.Grandfather Domenico，an elderly man who lives in Bari in southern Italy，decided to go back to middle school to get his eighth-grade diploma at the age of 83.
In grandfather Domenico's times，
going to school was a completely different matter!Poverty was very common.Four students had to share one school desk，and education ended as soon as it was possible to find a job and go to work.
It was the birth of his grandchildren that changed everything!In the evenings，Domenico often found himself reading and telling simple stories to his grandchildren，and right at that time，he began thinking about an idea that he had always had in the back of his mind.He wondered： "What if I decided to study and get my middle school diploma？"
So，for a whole year，Domenico studied Italian，F(xiàn)rench，mathematics，science，technology...in short，all the subjects he needed to learn in middle school.
His class was a very unusual middle school class.It was made up of immigrants eager to get their diplomas to find jobs，retired parents who in their mature age wanted to continue to reach personal aims，and young workers who wanted to get a better position or a promotion.In short，everyone there had a particular story that was sometimes painful but they were all eager to start a new path through education，study，and knowledge.
And so instead of spending the evening playing cards or watching TV，Domenico prepared seriously for his exam，and his teachers were amazed at his great progress.In fact，his grandchildren also noticed his progress，seeing the cease with which their grandfather spoke to them about topics that once were unknown to him!
（1）What can we learn about Domenico's educational background？ （no more than 10 words）
（2）What does the underlined part in Paragraph 2 mean？ （no more than 5 words）
（3）What was special about Domenico's class？ （no more than 15 words）
（4）What did Domenico's grandchildren find about him？ （no more than 15 words）
（5）How do you feel after reading Domenico's story？Please explain. （no more than 20 words）
