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根據對話內容，從方框內選擇合適的句子補全對話

A: What’s that?

B: (1)_________

A: When was it invented?

B: (2)_________

A: How did it work?

B: (3)_________ They pushed the pedals (踏板) down hard with their feet. (4)_________

A: What was it made of?

B: It was made of wood. (5)_________

A: Yes, I never saw such a machine before.

“Never give up!” It is my law(法則) of my life. It has brought me   16  . I learned the law from my father’s   17  story.
My father was  18  in a poor village in the north of Jiangsu, in China. When he was a young boy, he went to school in the morning, then   19  in the fields till sunset. And then he did his homework   20  midnight. Life was hard, because they had no   21  !
At the age of 14, my father heard of the United States of America. It was the land of gold, the land where   22  people can become rich.
“   23   don’t I go to America?” he thought to himself, full of hope.
So , my father came to America. “ I had thought it was easy to   24  money in America,” he told me. “But when I arrived there, I realized it was not true. They did not like to hire（雇傭） me because I spoke   25  English. Later, I worked in a small restaurant, cleaning up tables,  26  dishes and sweeping the floor. Life was   27  for the first few years. I worked from 10a.m to 11p.m. I wanted to go to school to learn English, but it was impossible. I couldn’t  28   the schooling(學費).
My father   29  working hard, and reached his goal.
“Alan,” he often says to me, “If you want something, you have to work for it and never give up. Things do not come   30  in life.” That is what I learned from my father.

I can’t remember when I started collecting litter. But it was when I got tired of seeing litter nearby and ___1___ that no one else was going to pick it up.
I live near a forest in Ohio, America. I can walk there ___2___ three minutes. I used to love going there to play with my dog. But one day there was ___3___ much litter there that I became very unhappy. I decided I had to clean up the forest. I wanted to feel happy ___4___ there again.
I __5___ my first trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten minutes after starting to pick up litter, my bag was ___6__! It had cans, bottles, broken glasses and newspapers in it. From then on, I went to the forest four times a year to pick up litter. I’m often there for three hours. It makes me feel ___7___ to do something for the environment.
After each trip, I look at all the litter that I’ve found. If ___8___ of it is recyclable(可回收的) , I keep it. I can’t understand ___9___ people drop litter. But I will keep picking it up until they stop dropping it. I know I am only doing a small bit to ___10___ the earth, but I still think it is important.