英语阅读理解题!How often one hears children wishing they were grown

英语阅读理解题!
How often one hears children wishing they were grown up,and old people wishing they were young again.Each age has its pleasures and its pains,and the happiest person is the one who enjoys what each age gives him without wasting his time in useless regrets.
Youth is a time when there are few tasks to make life difficult.If a child has good parents,he is fed,looked after and loved whatever he may do.It is impossible that he will ever again in his life be given so much without having to do anything in return .In addition,life is always introducing new things to the child ----things that have lost their interest for older people because they are too well-known.But a child has his pains:he is not free to do what he wishes to do; he is continually being told not to do things,or being punished for what he has done worng.
When a young man starts to earn his own living,he can no longer expect others to pay for his food,his clothes,and his room but has to work if he wants to live comfortably.If he spends most of his time playing about in the way that he used to break the laws of his parents,he may go to prison.If ,however,he works hard,keeps out of trouble and has good health,he can have the great happiness of building up for himself his own position in sociey.
（1）According to paragraph 2,the writer thinks that the life for a child is _____.
(2)If a person wants to have the great happiness of building up for himself his own position in society,he needs to ___________.
(3)The main idea of th passage is __________.
A.life is not enjoyable since each age has some pains.
B.young men can have the greatest happiness if they work hard
C.childhood is the more enjoyable time in one's life.
D.one is the happiest if he can make good use of each age in his life.
.
这里的第二段和第三段合并为一段昂、、
只做第三题就可以了、