input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: One day,Mr.Li was reading a book in his office after school.To his surprise,a ball flew in suddenly and hurt him on the head.He took the ball to the window,but he only saw a group of boy students running away quickly and disappearing in a minute.He sat down again and continued his reading.As it got dark,it was time for him to leave for home.Looking at the ball,he wondered what to do with it.He knew the owner of the ball must be nearby and wished to get it back.He went downstairs and walked to the playground.It was at the center of the playground that he placed the ball with a piece of paper,on which he wrote "Be careful next time!".Then he walked away. The next morning,as Mr.Li opened the office door,he found the same piece of paper on the floor.Some words were added after his words:"Thank you for your kindness.Anyway,you are a clever fellow." Options: A The window was broken by a ball. B A ball hurt him on the head. C A ball hit the window. D The door was broken by a ball. Answer: B A ball hurt him on the head. Question:
++++++++++
output: What happened while Mr.Li was reading in his office?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Hi! I'm Tom.This is my pencil box. It's orange. My ruler is blue and red .It's in the pencil-box. That is a pencil. It's black. It is not my pencil. It's Lucy's. The white eraser is Bob's. I call Bob at 789-6943. It is his telephone number. Options: A It's white B It's black. C It's orange D It's blue and red. Answer: C It's orange Question:
++++++++++
output: What color is Tom's pencil-box?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Health officials in Canada are very busy these days. They are placing chickens at fixed points all along their 2,500 km border with the United States of America. It's not a joke, nor have the Canadians gone mad. They are using these chickens to see if the West Nile virus is still around. The virus infects birds, so the chickens have a chance of catching the virus and fall ill. The West Nile virus is spread among humans. It killed seven people in New York last year. Countries around the world are realizing that it may just be possible to stop certain kinds of people from entering their land. However, it is very difficult to stop viruses traveling from one end of the earth to another. When they travel to new places, they get used to the environment very easily and sometimes start destroying the local plant and animal life. These biological polluters are called smart polluters. These smart polluters can be carried across borders of countries unknowingly. Just as we humans are travelling across the world more often than earlier, these biological polluters have also started journey much more. They slide into airplanes through their wheels. They dig into objects that travelers may be carrying from one country to another. There are some good examples of how these polluters work. The water hyacinth of South America is blocking lakes in China and Africa. Tree snakes from Papua New Guinea are busy eating up some birds in the country of Guam, which breaks its natural balance. That's why the customs officials in many foreign countries prevent people from bringing in a small plant, or an object made of wood that is in its natural form. The customs officials have these rules because these varieties of plants are special to certain places. The plants have the power to spread new illnesses among native plants and animals. Biological polluters always create problems in places where they do not belong. They could be special varieties of plants, bugs or even animals. Options: A chocolates B shoes C pictures D plants Answer: D plants Question:
++++++++++
output: Customs officials in many countries prevent people from bringing in _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: One day a pilot and three people were in a plane. When the plane was flying in the sky, there was something wrong with it. The smoke was everywhere in the plane. The pilot told the people there were only three parachutes . They all became worried. "I must go because I'm the best pilot in the world." said the pilot, then he jumped out with one parachute. The next person said, "I must have a parachute. I am a very clever person, and I have to take part in an important meeting." he jumped out with another parachute. Two men were left, an old businessman and a young mountain climber. By this time the plane was going down faster and faster. The businessman said, "Young man, I am old but you're still young. You take the last parachute. " The young mountain climber smiled, "Don't worry, we are both safe, because there are still two parachutes. The clever person jumped out with my backpack." Options: A they couldn't find the parachutes B there were only three parachutes,but there were four people in the plane. C There was too much smoke and they couldn't jump out from the plane. D They saw the pilot jump out first Answer: B there were only three parachutes,but there were four people in the plane. Question:
++++++++++
output:
All the people became worried because _ .