Mike Smith is a six-year-old boy. His father bas a shop in the centre of a small town. He 1 some food in his shop. He's friendly to the buyers and the food in his shop is 2 . So people like to buy something there. And he's very 3 all the time.　　It was Mr Smith's forty-first birthday yesterday. His wife decided to 4 some fish for her husband. As he couldn't leave his shop and she had to 5 in the kitchen, she thought her son could help her. So she told Mike to go to 6 some fish. Before the boy went out, she said, “Your dad likes fish alive, you know. Don't 7 the dead fish home.”

　　“But how can I tell the living fish from the dead ones?”

　　“That's easy,my son, “said the woman. “Put the fish into the water and watch carefully. The living fish can 8 , but the dead ones can't. “

　　“OK. Mummy,” the boy said and left. He went outside the town and saw 9 farmers catching fish in a pool （池塘）. He put a fish into the pool, and the fish soon went down under the water. He was 10 and shouted, “Please sell the fish to me, sir!”