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.

Article: Many years ago I lived in a western country. My very first job was in the city and I was excited to go to work by public transport! I had never been employed before and my chances of travelling on a bus by myself had always been very slim. So, I was very happy with my new lifestyle! I left home each morning in time to catch the 8.05 bus from the main road. One autumn morning I could see the bus approaching. I could also see an elderly lady walking with a lovely dog beside her. There were some youngsters behind her. The bus arrived and we got on. Only eight passengers were permitted to travel standing. I was inside the bus when the conductor called, "Only eight standing passengers! Could the last one to get on please get off?" I saw those youngsters inside, right in front of me, and it occurred that they had jumped the queue! I turned and saw the elderly lady with her dog about to get off. I moved quickly to get in front of her. I encouraged her to stay, knowing very well I would be late that morning, but it didn't bother me. It was only as I moved past her to get off the bus that I realized -- she was blind! Her dog was her guide dog! Well, I eventually got to the office. After the day's work I went to the bus stand in front of my office to make the return journey. What a pleasant surprise! The lady and her dog were there! I was really pleased because I would get a better chance to speak with her. I started the conversation and she recognized my Asian accent! She asked if I was the same person who helped her that morning. Amazing! From there onwards it was one long happy conversation. These beautiful memories are still fresh in my mind. By helping others, I feel content!
Answer: enjoy going to work by public transport
From the first passage, we can learn that the author _ .

Article: The United States is faced with serious traffic problems. Too many cars travel on the freeways to and from the city. This heavy traffic causes delays and lots of pollution from cars that are using their engines but not moving anywhere. Many cars going nowhere is called a "traffic jam." While many cities in the United States have traffic problems, some of the worst are in Los Angeles, California. Los Angeles is a big city with a large downtown area. One of the reasons why there is so much traffic is that few people use public transportation to get around Experts say one possible solution to the traffic problem in Los Angeles would be to make people want to use the public transportation system of buses instead of their own cars. People say the buses should be made easier, faster, less costly and more dependable than driving a car. One suggestion is to reduce the cost of riding the bus. People who usually drive their cars could save a lot of money on gas and parking costs. Also, Los Angeles could make the buses easier for people to use. The buses could travel to more places in the city. And there could be more special lanes on the freeways that only buses could drive in. These changes would make taking the bus faster and easier than driving a car. Other experts have said that the best way to ease traffic problems is to charge people money to drive on the freeways. These charges, or tolls, would be for the most crowded roads. The tolls would be in effect during the times of day when most people drive to work and home again. These times in the morning and late afternoon are called "rush hour". People would try to avoid driving on these roads, which would decrease the amount of traffic. Also ,the money collected from these tolls could be used to improve the roads and public transportation system.
Answer: possible solutions to solving American traffic problems
The passage mainly discusses _ .

Article: Robots industry is developing so rapidly that there is no denying that we may one day find ourselves surrounded by robots. The humanoid (human like) robots with two legs such as Honda Motor Co. Ltd's ASIMO would likely have an easier time climbing up stairs inside homes than a robot that moves on wheels, developers say. But it will be some time before such devices make their way into people's homes. "They may look smart, but they are still quite stupid," Shimoyama said. "I don't think they will ever be as smart as humans." While safety is an obvious concern, robots also need to be sensitive to people's needs. Researchers at Fujitsu Frontech Ltd and Fujitsu Laboratories responsible for developing "Enon", a guide and patrol robot designed for use in shopping malls and corporate facilities , are working on this. Enon, which has a humanoid upper body but no legs, is equipped with a touch screen on its chest and space in its stomach to carry loads weighting up to 10 kg. In guide mode, it will check a newcomer and approach the person with a nod and a greeting: "Are you a visitor? Hello." Visitors requiring directions can point to icons displayed on Enon's chest screen. If the restroom icon is pressed, the screen will display a map that shows the way. The robot will then face and point in the direction of the restroom, although it won't actually walk the visitor there. Enon is now in use at four locations in Japan, including a shopping mall near Tokyo. The main goal is to make it more helpful for the elderly. "People who work in the transportation sector often ask whether we can build a robot that will find elderly people who look lost in train stations, and ask them if they are all right," said Toshihido Marita, director of Fujitsu Laboratories Ltd's autonomous system laboratory. "Actually that is hard to do, very hard," he said.
Answer: it can walk smoothly with its wheels
The advantage of Honda Motor Co. Ltd's ASIMO is that _ .