Once，there was a young painter who was good at painting birds. His paintings sold{#blank#}1{#/blank#}and he was famous all over his country.

    The emperor loved collecting(收藏)paintings，especially roosters(公鸡). {#blank#}2{#/blank#}he asked the famous painter to paint a rooster for him. He wanted the rooster to be the best of all his collections.

     The painter{#blank#}3{#/blank#}to do so. The emperor waited and waited for one year, but did not get the painting. He became {#blank#}4{#/blank#}and asked the painter to come to see him.

    The painter came. He walked into the palace{#blank#}5{#/blank#}paper, paints and a brush. In five minutes，a perfect(完美的)picture of a rooster{#blank#}6{#/blank#}on the paper. Seeing this，the emperor was all the more angry.“If you can paint a picture of a rooster in five minutes，{#blank#}7{#/blank#}did you keep me waiting for a year?”he said.

    “I'll let you know why，Your Majesty ”said the painter. “Could you please come with me?”

    He{#blank#}8{#/blank#}the emperor to his own study(书房). There，paper almost filled the {#blank#}9{#/blank#}. On each paper was a painting of a rooster.
    “Your Majesty, ”explained the painter. “It took{#blank#}10{#/blank#}one year to improve my skill in order to paint a perfect rooster for you. ”

A: Hi, Danny! What's this in English?

B: Oh, it's a key.

A: What's it {#blank#}1{#/blank#} of?

B: Metal.

A: What is it used for?

B: it's used for opening and {#blank#}2{#/blank#} a door.

A: I see. That's {#blank#}3{#/blank#}. Can I have a try?

B: Yes, please.

A: Look! It works. By the way, what's that over there?

B: You may have a guess.

A: It {#blank#}4{#/blank#} strange. It's not like a bike or a plane. Who invented that machine?

B: It was invented by my father. You may call it "pbike".

A: When was it invented?

B: Yesterday morning.

A: What is it used {#blank#}5{#/blank#}？

B: It's used for riding or flying.

A: But how does it work?

B: You can ride it like a bike. As you ride faster and faster, it can fly like a plane.

A: That sounds interesting. I think your father is so great！

B: I think so.

A: Do you mind my having a try?

B: Of course not.