根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
We often hear that children wish they were grown-ups, and that old people wish they were young. __71__ The happiest people enjoy what each age gives them without wasting their time in useless regrets.
__72__ A child is fed, looked after and loved by all grown-ups like parents or grandparents. __73__ However, for older people they often lose their interest in those things.
On the other hand, a child may also have some pains with him. __74__ He is often told not to do something. He will certainly be shouted at for doing something wrong.
When a child grows up, he can no longer expect others to pay for his food, clothes and many other things. __75__ If he still spends most of his time playing as he used to in childhood, he will go hungry. If, however, he works hard and has no trouble, he can build up his own position in society with great happiness.

A．What’s more, life is always giving new things to him.

B．He enjoys his life very much.

C．And if he wants to live comfortably, he has to work.

D．He is not so free to do what he wishes to do.

E.     Life is always sad for old people.
F.     Each age has its own pleasures and its own pains.
G.    Childhood is a time when there are few duties.
71.______      72.______      73.______      74.______      75.______