input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: In the 13th century , the famous Italian traveller, Marco Polo, travelled a long way to China.During his stay in China, he saw many wonderful things. One of the things he discovered was that the Chinese used paper money. In western countries, people did not use paper money until the 15th century. However, people in China began to use paper money in the 7th century . A Chinese man called Cai Lun invented paper almost 2,000 years ago. He made it from wood. He took the wood from trees and made it into paper. He then put these pieces of paper together and made them into a book. Now paper still comes from trees. We use a lot of paper every day. If we keep on wasting so much paper, there will not be any trees left on the earth. If there are no trees, there will be no paper. Every day, people throw away about 2,800 tons of paper in our city. It takes 17 trees to make one ton of paper.This means that we are cutting nearly 48,000 trees every day. Since it takes more than 10 years for a tree to grow, we must start using less paper now. If we don't, we will not have enough time to grow more trees to take the place of those we use for paper. So how can we save paper? We can use both sides of every piece of paper, especially when we are making notes. We can choose drinks in bottles instead of those in paper packets. We can also use cotton handkerchiefs and not paper ones. When we go shopping, we can use fewer paper bags. If the shop assistant gives us a paper bag, we can save it and reuse it later. Everyone can help to save paper. If we all think carefully, we can help protect trees. But we should do it now , before it is too late. Options: A 17th B 15th C 13th D 7th Answer: B 15th Question:
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output: People in western countries first used paper money in the _ century.

Please answer this: Write a multi-choice question for the following article, with the given choices and answer: Article: Many people use their mobile phones as the alarm clock and are more used to checking e-mails before sleeping. However, these habits are becoming sleeping problems. Several years ago, my boss used to stay up working on her mobile phone and got badly ill because of _ . Now she always leaves her phone in another room at night. And she encourages friends to do so. "I sent each of my friends the same christmas gift - an alarm clock so that they could stop using their phones as the alarm clock," she said. If your mobile phone wakes you up in the morning, it may also be keeping you up at night. A study in 2008 showed that people in mobile phone radiation mostly had sleeping problems. And according to a Swedish study, a quarter of young people in this country feel like there must be phones around them. Most of them feel sorry for not returning messages. So they even have to reply to their friends before sleeping. So what kind of people prefer to use mobile phones in their bedrooms? A recent study has shown that three-quarter people aged between 18 and 34 prefer to sleep with their phones near them. That number falls off a little in middle age, but only people aged 65 and older are used to leaving the phone in another room while sleeping. Options: A 25% B 50% C 75% D 100% Answer: A 25% Question:
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Answer: According to the Swedish study, _ of young people in Sweden always put phones around them while sleeping.

Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: Robert is thirteen years old now , but he still remembers one day ten years ago, when he tried to get a bottle of milk from the fridge. The bottle fell to the floor and the milk spilled all over the floor. When his mother came into the kitchen , she didn't shout at him"Oh, Robert, it is _ . Well ,would you like to play in the milk for a few minutes ?" she said. Robert was very surprised ,but he began to play in the milk quickly, after a few minutes, his mother said ," You know ,Robert, when you make a mess like this ,you have to clean it yourself ." He then cleaned the milk with his mother. His mother then said, "It's hard to take a big bottle with your two small hands. Here is another bottle .Let's see how to find a better way to take it." The little boy learned that if he took the bottle near the top with both two hands , he could do it easily . Robert also learned that it wasn't always bad to make mistakes .It was just the mistake that helped him to learn new things. What a good lesson!! Options: A Robert and his mother B Robert only C Robert's mother and father D Robert and his father Answer: D Robert and his father Question:

A: Who cleaned the milk finally?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Graffiti is a common feature of most Western cities. The word _ was from the Greek word, graphein, which only meant writing. These days, however, the word means drawing or writing on the walls of buildings, or the public transportation, such as trains or buses. Graffiti, as a form of expression, was born in New York during the 1960s and 1970s. At that time, a new modern culture about city life appeared. Graffiti was a written form of expression of that life. Later, it was mixed with a musical form called hip-hop that was another expression of the city life. At first, graffiti artists used pens. But then, with the development of graffiti, they became experienced. They turned to using spray paint . Spray paint allowed them to draw a greater area. And it also allowed them to work quickly. At present, different people have different ideas about graffiti. Some people say it makes the cities dirty. It isn't allowed by many local governments in America. The governments spend more than a million dollars a year cleaning graffiti. The money, they say, could be better spent on health or education. Other people think it is a form of art. In fact, the works of some famous graffiti artists can be found in museums, galleries, and art books. Options: A The meaning of graffiti. B Different expressions of graffiti. C Different attitudes towards graffiti. D The history and the development of graffiti. Answer: D The history and the development of graffiti. Question:
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The answer is:
What's the article mainly about?

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: One day Mr Brown sees a young woman with several children in the street. He is very surprised because all the children are wearing the same clothes. White caps, blue coats and yellow trousers. "Are all these children yours?" he asks the woman. "Yes, they are," she answers. "Do you always dress them in the same clothes? " asks Mr Brown. "Yes," answers the mother. "When we have four children, we dress them in the same clothes because we don't want to lose any of them. It is easy to see our children among other children because they are all wearing the same clothes. And now we have ten, we dress them like this because we don't want to take other children home by mistake . When there are other children among ours, it is easy to see them because their clothes are different." Options: A White caps, blue coats and yellow trousers. B Blue caps, yellow coats and white trousers. C Yellow caps, white coats and blue trousers. D White caps, yellow coats and blue trousers. Answer: A White caps, blue coats and yellow trousers. Question:???
output answer:
What kinds of clothes are the children wearing when Mr Brown sees them?