Mr. Black had two cats. One was big and the other was small. He liked them very much. One day his friend Mr. Green came to see him. He was very surprised. He found there were two holes(洞) in the door, a big hole and a small one. He said, “My friend, why are there two holes in your door?” “To let them in and out,” Mr. Black answered. “But why are there two holes?” asked his friend. “How can the big cat go through the small hole? ” he said.
1.Mr. Green had two cats. (
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2.Mr. Green came to see the cats. (
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3.There were two holes in the door. (
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4.The small cat could go through the big hole. (
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5.Mr. Black is very clever. (
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