TASK DEFINITION: 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.
PROBLEM: Article: Our first winter in Canada was the happiest we have experienced. We were living in the countryside then and had just arrived from Hong Kong that autumn. One evening in mid December snow began to fall. When we looked out of the window and saw that it was snowing, we all cheered. It was the first snow we had ever seen and we were excited. We could hardly wait for the snow to stop so that we could go out to play. Next morning when we woke up, it was still snowing. We switched on the radio and learned that more than ten inches of snow had falled during the night and that since the roads were blocked there would be no school that day. We jumped up and down for joy and begged mother to let us go outside to play in the snow. She said we could go out after breakfast if we dressed ourselves warmly and promised to come back as soon as we felt cold. When we went out, the snow had almost stopped. The roads , paths, gardens, and playing grounds were all hidden under a white blanket of soft snow. It was the most beautiful sight we had ever seen. Just then, we saw some neighbour's children coming out to play. We ran over to join them. Together we built a snowman and a snow house. After that, we took turns sliding down a hill on a large piece of cardboard. We were having so much fun when supper time came. Mother almost had to force us to go in and eat.
Answer: it was the first time they had seen snow

SOLUTION: The children all cheered when they saw the snow because _ .

PROBLEM: Article: The opera house in Santa Fe, New Mexico, is one of the most beautiful in the United States. It is small and open, with one roof over the stage where singers perform and another roof over part of the audience. This opera house in the mountain is one of the best in the country, which may seem surprising because performances are only given during seven weeks in summer, and because Santa Fe is a very small city. One reason why the Santa Fe Opera is so good is that it attracts many excellent young singers .They all hope to sing in famous opera houses like Metropolitan in New York someday. And they work hard to become well-known during the summer. The musicians and directors are experts who come from the best orchestras and operas in the country during their vacations. They enjoy working there because they like to live in Santa Fe, which is near both the mountains and the desert. It is very beautiful there in summer. The state government of New Mexico advertises the Santa Fe Opera in newspapers all over the country, and a great many tourists come to New Mexico because of the opera ,Still ,most of the audience does come from Santa Fe and other nearby cities. And all the seats in the theater are sold for every show. There is only one thing that some people do not like about the Santa Fe Opera, and that is the cold weather .Because the theater is open, performances cannot start before it gets dark at nine o'clock in the evening, and then the mountain air becomes very cool. Sometimes people complain about the cold air ,but because the opera is good , these people come back again wearing warm coats.
Answer: the tourism in Santa Fe

SOLUTION: This passage mainly introduces _

PROBLEM: Article: The cheetah is best known for being the world's fastest land animal, reaching speeds of just over 110kph for short period of time. However, many people know little else about this wonderful animal. The word cheetah probably comes from a Hindi word spotted animal. It is very similar to other cats but also has some obvious differences. Its body is much leaner than most cats and it has much longer legs. People sometimes make a cheetah a leopard because they both have spots, but in fact they are very different. A leopard is far heavier and more powerful, but also much slower. The cheetah's spots cover most of its body except for its stomach and throat. The cheetah's tail has spots and these become rings at the end of the tail. An adult cheetah weighs between 35-65 kilograms and is about 80 centimeters high at the shoulder. The cheetah's head is quite small and the eyes are quite high up. A black line runs from each eye down to its mouth and makes it look a little sad. It has high shoulders that help it to walk so gracefully. Cheetahs are very fast but they are not very strong. They are not good fighters and will run away rather than fight another animal to protect their food. If they make a kill, it is sometimes taken away from them by stronger animals such as lions and leopard. These animals will kill their young if they get the chance. The cheetah is not a threat to humans at all. It will not attack humans and prefers to stay away from occupied areas.
Answer: runs faster than any other animal on land

SOLUTION:
Many people know that the cheetah _