input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: People usually check whether their keys, wallets and phones are with them before going out . But many people in China now have one more important thing to take -- a face mask . They hope that it can protect them from polluted air. Since January, many cities in China have seen a lot of foggy days.In Beijing, only five days in January were free of smog . It is dirty air that looks like a mixture of fog and smoke caused mainly by smoke from cars and factories in cities. Poor air has done harm to people's health, especially for children and old people. They fall ill easily and the hospitals are full of the the patients of respiratory problems. To respond to the air problems, the Chinese government and many Chinese people have started to take action. Beijing announced plans to use cle an fuel in government vehicles and plant trees. It also asked citizens to set off fewer fireworks for celebrations. Three students from No.4 High School in Beijing wrote a report to advise how to fight the air pollution. They suggested that cars with large emissions should not be allowed to use and factories should be closely watched. We hope more people will join us in making a difference. With all our efforts , the blue skies will certainly return for good. Options: A driving cars and having fewer trees B burning coal and having fewer trees C having fewer trees and no rain D driving cars and burning coal Answer: D driving cars and burning coal Question:
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output: What are the main factors for PM2.5 according to the Chinese Academy of Sciences?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Whenever there's a terrible storm, there are many sad stories. Many people lost their houses, their cars and their pets. But sometimes these stories have happy endings, too. A family in New Jersey, US, had a cat named Vivian. She was very smart. She could even draw with her wet paws on the floor. They all loved her very much. When hurricane Sandy hit America in October, they moved to a safer place 13km away from home. Unluckily, Vivian was missing . All the nine family members were worried about her. They put up posters to find her. They looked for her everywhere they thought she could stay, but they didn't find it. The family thought Vivian was gone forever. But six months later, Vivian showed up at their house, according to Yahoo News. They considered her return as a _ . No one can be sure where Vivian was for all that time. Many animals are good at finding their way home. People usually say that dogs and cats find their way home through using their sense of smell . But that doesn't explain how Vivian found her way back. Hurricane Sandy blew away the normal smell of home. "I wish she could talk," said her owner. Options: A 6 months B 9 months C 13 months D a year Answer: A 6 months Question:
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output: The cat was missing for _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: There were two McDonalds--Mac and Dick--and they were brothers. In 1948, they owned a restaurant in California, they liked working in the restaurant, but they got tired of the customers ordering so many different things to eat. "If we gave customers a smaller menu, we could make some of the food before they came, and they wouldn't have to wait so long for their meals," said one of the brothers. The other brother agreed and said, "And if we made the customers come to the counter, we wouldn't need any waiters or waitresses. We could also use plastic plates so there wouldn't be any washing-up." These were such good ideas that McDonald brothers used them, and the customers were very pleased. They got their meals very quickly--in less than a minute--and they paid only 15 cents for hamburgers and 10 cents for fries. The first McDonald's restaurant had no seats for customers to sit on. This meant that people had to take their food away, and that no one had to clean up any tables after them. Then a man called Ray Kroc came to the brothers and asked to buy their business. They agreed to sell it to him for$27 million. After that, people paid Ray Kroc to open their own restaurants using the McDonald's name and menu. Before long, there were McDonald's restaurants all over the United States, and nowadays, they are all over the world--even in China and Russia. The most successful McDonald's business is in Hong Kong of China. The Hong Kong McDonald's sells more hamburgers every day than any other McDonald's anywhere else in the world. McDonald's restaurants are so successful because children love going to them. They like the food, and they like the toys and games they can get at McDonald's. Options: A a restaurant in California in 1948 B how Ray Kroc made money for the McDonald brothers C where McDonald's restaurants are in the world. D how the McDonald's business started and grew Answer: D how the McDonald's business started and grew Question:
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output: This story mainly tells us _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: In Xinjiang, most people knew the stories of Avanti. Avanti was a very clever man. People liked him because he not only spoke for the poor but also was always ready to help them. One day Avanti walked on the street and saw two men arguing with each other. A lot of people stood around them. One of the two men was the owner of the eating house in the town and the other was a young man. The young man just passed by the eating house. The owner of the eating house told the young man to pay him money. The young man explained that he hadn't taken anything from the eating house. But the owner said that the young man had taken the smell of the nice food from the eating house, and he must pay for it. So Avanti went up to the owner and said, " I'll pay you the money." Avanti took out some coins from his pocket and put them into his bags. He shook his bag, and people heard the sound of the coins. Then Avanti said to the owner, " Take away the sound of the coins. That's what I pay for the smell of your food." Options: A arguing about the eating house B arguing about the payment C eating in the eating house D laughing at the people around them Answer: B arguing about the payment Question:
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output:
One day Avanti saw two men _ .