In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

[EX Q]: Article: winter-swimming has become popular in Beijing. three years ago, few people would go swimming in the city waters. but now there is a winter-swimming enthusiasts'club and it has more than 2,000 members. the oldest is 84 years of age and the youngest is only 7. _ They may be workers, peasants, soldiers, teachers, students....Though it is now the coldest part of the season and the water temperature in the city's lakes is around 0degc, many winter-simmers still swim in the icy waters, even when it is snowing. They enjoy themselves in the lake, while the people by the side of the lake are wearing heavy clothes. why are so many people interested in winter-swimming? Because winter-swimming can be good for one's health. Bei Sha is a good example. He is 69 years old, and he once suffered from heart trouble for 26 years. After ten years of winter-swimming he is now in good health. Scientists are now studying the effects of winter-swimming on health.
Answer: The members do different jobs at different places.
[EX A]: Guess what "the members are from all walks of life" means _ .

[EX Q]: Article: You are standing under the most famous neon lights in the centre of prefix = st1 /London, waiting to cross the road. Suddenly the traffic stops. You hear the distant sounds of cheering, clapping and shouting. Then, like a multi-color1ed train, 2, 000 people with wheels on their feet zoom past you. You have just witnessed the London Skate, a twice weekly roller-skate event that attracts people in their hundreds and thousands London Skate is a completely free tour of the streets ofLondon--the only condition is that you go along on roller-skates. It lasts between two and three hours and by the end of it you have skated between 10 and 12 miles. The skate snakes sound the streets of Londonalong several different routes. Many of the routes pass by tourist attractions such asBuckinghamPalaceand Big Ben. Marshals go ahead of the group, stopping the traffic so that people can skate as safely as possible. Everyone is welcome to take part and people from the age of 4 to 63 years old join the fun. "I love it very much, it is amazing. It feels just like a carnival .", said Celeste Beverage regular skater. Roller-skating is really _ across Europe andAmerica. It is a very good way to keep fit and can be practised anywhere there is a smooth surface. Many big cities in Western Europe and in theUSnow have a regular group skating event. The biggest skates take place in Paris and Munichand tens of thousands of fans show up on warm evenings. "Roller-skating is taking over the world," said Julian Grenoble, a 25-year-old ski shop employee fromLondon. Grenoble went to the Paris-Roller(Paris skate) regularly until he moved toBritain. "It's so exciting to skate in Pairs. Everyone skates so fast and puts in their best efforts!" he said. The Paris Roller is well known because of the huge attendance, the presence of marshals and the police protection. Parisis a great city for roller-skating because of its long wide streets and smooth surfaces. Roller-skating is also becoming more popular inChinaamong young people and children. Skating fans' favorite places to practice inChinaare big squares.
Answer: roller-skating in big cities
[EX A]: This article mainly talks about _ .

[EX Q]: Article: It was already dark when an old man came to a small town. He found an inn and wanted to stay there for the night. After he had gone to his room, the owner said to his wife, "Look at his bag, dear. I'm sure there are lots of valuable things in it. I want to steal it when he is asleep." "No, no," said the woman. "He must look for his bag tomorrow morning. Then he'll take you before the judge." They thought and at last the woman had an idea. "We have forgetful grass," said the woman, "Why not put some into his food? If he has the food, he will forget to take his bag away." "How clever you are!" said the owner, "Don't forget it when you prepare supper for him." The old man had the food with the forgetful grass and went to bed. The next morning, when the owner got up, he found the door was open and the old man had left with his bag. He woke his wife up and said angrily, "What a fool! Your forgetful grass isn't useful at all." "No, no," said the woman. "I don't think so. He must forget something." "Oh, I've remembered!" The owner cried out suddenly, "He forgot..."
Answer: at night
[EX A]:
The old man came to the inn _ .