Write a multi-choice question for the following article, with the given choices and answer: Article: Mary is an American schoolgirl. She is now in Beijing with her parents. She doesn't know Chinese, but she is trying to study and speak it. She often tries to speak Chinese to her Chinese friends. Sometimes they don't understand her, because she can't speak Chinese well. It's Saturday morning. Mary goes out. She is on her way to the park. She is going there to see a flower show . But she doesn't know how to get there. She asks a Chinese boy. The boy can't understand her. Then she takes out a pen and some paper. She draws flowers on it, gives the picture to the boy and says something about it. The boy smiles and then shows Mary the way to the park. Options: A America B England C China D Canada Answer: C China Question:
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Answer: Where does Mary live now? She lives in _ .

Write a multi-choice question for the following article, with the given choices and answer: Article: Tom and Fred are talking about the year 2020. "What will our world be like in the year 2020?" asks Tom. "I don't know," says Fred. "What do you think?" asks Tom. "Well, no one knows, but it's interesting to guess," says Fred. "In the year 2020 everyone will carry a pocket computer. The computer will give people the answer to all their problem. We will have telephones in our pockets, too, and we will be able to talk to our friends," says Tom. "A lot of people will live and work under the sea. Machines will do most of the work, and so people will have more holidays. They will be able to fly to the moon by spaceship and spend their holidays there," says Fred. "And I hope I will be able to live under the sea," says Tom. "Won't that be very interesting? Just like a fish." Options: A pocket computers B more holidays C pocket telephones D go on sale Answer: C pocket telephones Question:
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Answer: In 2020, we'll talk to friends at all times and everywhere, because we'll have _ .

Write a multi-choice question for the following article, with the given choices and answer: Article: London used to be "foggy" for the same reason that cities like Beijing or Chongqing are "foggy" today. The "fog" was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal that people burnt in their houses to keep warm during the winter. By the 1950s, London's smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more " _ ". Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people's houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel , like gas, is quite expensive. However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer "pea-soupers" in Beijing than there used to be. Options: A There was too much smoke in the sky. B There were too many factories in the city. C People burnt too much coal in the houses. D The city was too big for the cleaners to clean. Answer: C People burnt too much coal in the houses. Question:
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Answer:
What was the main reason for air pollution in London?