阅读下列短文，掌握其大意，然后从所给的四个选项中，选出一个最佳答案

　Tom bought shoes 　1　　　 the shoe factory and tried (试图) to sell 　2　　 　to people. There 　3　　 　not many 　4　　 　in small villages. People there didn't 　5　　 　to go to town to buy their shoes. 　6　　 　Tom 　7　　　 a lot of shoes there.

　One day Tom 　8　　 　along the street. He stopped in front of a house. There was a small boy beside the door. Tom 　9　　 　the window of his lorry (货车) and called to the boy, “Hello! Is your 　10　　 　at home?”The boy looked at Tom. Then he answered, “Yes, she is.”

　“That's very 　11　　 　,”Tom said. He 　12　　 　his lorry, took some 　13　　 　and walked to the door of the house. He knocked at (敲) the door and 　14　　 　for a few 　15　　 　,but 　16　　 　came to answer the door. Tom knocked 　17　　 　and waited a few more minutes, but still (仍然) no one answered. Then Tom looked at the boy and 　18　　 　angrily (生气地), “Your mother is NOT at home!”“SHEIS！”the boy said.

　“　　　19 　　 　didn't she open the door?”

　“This is not 　20　　 　house,”the boy shouted (高喊).

完形填空

　　Tom bought shoes from the shoe factory and tried to sell them to people.

　　There were not many 1 in small villages. People there didn't 2 to go to town to buy their shoes. So Tom 3 a lot of shoes there.

　　One day Tom 4 along the street. He stopped in front of a house. There was a little boy beside the door. Tom 5 the windows of his lorry (运货汽车) and called to the boy, “Hello! Is your 6 at home?” The boy looked at Tom then he answered, “Yes, she is.”

　　“That's 7 .” Tom said. He got down from his lorry, took some 8 and went to the door of the house. He knocked at the door and waited for a few 9 , but nobody came to answer the door. Tom knocked again and waited a few more minutes, but still no one answered. Then Tom looked at the boy and said angrily, “Your mother is not at home!” “She is!” the boy said.

　　“Why didn't she open the door?”

　　“This isn't 10 houses.” The boy shouted.