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.

Q: Article: For Kim LeBlanc, knowing that her son Tyler's organs, eyes and other tissues have given life or healing to others is helping her cope with the loss of her child, who was struck by a truck in Guelph on May 31. Tyler was believed to have been texting a friend when he stepped onto a high-traffic road against the green light and was struck by the truck. Then he was sent to a Hamilton hospital. Surgery was performed to ease the pressure in his brain, but .the family was told he would not recover. "With all of his injuries, I just prayed all night for a miracle. And I was granted a miracle, but not in the way I'd expected," says LeBlanc, her voice choked by emotion. The family decided to donate Tyler's organs, a choice she believes her kind and considerate son would have made on his own. It's also a choice that transplant programs wish would be made more often, because the need for donor organs is far more than the supply worldwide. More than 1,500 people in Ontario are on the waiting list for life-saving organs, and one dies every day because an organ has not become available in time. Across Canada, the gap between donations and the need for organs continues to widen. At the end of 2010, more than 4,400 Canadians were on the waiting list for donor organs, including 3,362 needing a kidney. That year, 229 died before the organs they needed became available. LeBlanc recalls the morning when her son was taken off life support and his organs were removed. Despite living what she calls a parent's absolute worst nightmare, LeBlanc says she has got the strength to bear such an unbearable loss. "He's still there. He's still living. And he's still breathing. And he's brought so much joy to families," she says. "He's my hero. He really is my hero."
Answer: he broke the traffic rule

A: Tyler was struck by the truck mainly because _ .
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Q: Article: There are many places around the city and online to buy Las Vegas show tickets. With dozens of websites you can find at home, ticket box offices, Tix 4 Tonight (one of the two half-price ticket sellers) locations, and ticket sellers along the Las Vegas trip, you might wonder where you could find your best deal. Major Shows If you want to see one of the top shows in Las Vegas, you could buy your tickets online before your trip. Many of these shows sell out months ahead of time, so make sure you do your research. Best Place to Buy Discounted Tickets If you want discounted tickets for Las Vegas shows, you should go to one of the four Tix 4 Tonight locations. These locations get tickets early in the morning or throughout the day if shows are not sold out. Do not expect to find discounted tickets here for the hottest shows in town such as one-night concerts or shows like Celine Dion's. These seldom make their way to Tix 4 Tonight. Coupon books As you walk along the Las Vegas Strip, you are going to come across people handing out the Vegas Values coupon books or other coupons. These may help you find discounted coupons for various shows around town. Tickets bought with coupons have to be bought at the box office for the show. These are usually located near the theater used for the show. On-Strip Sellers If you see people standing on the Strip selling show tickets, make sure you avoid them. While a few of these sellers might be legitimate ,they often cheat people by selling counterfeit tickets. Catching a show in Las Vegas is one of the various activities people take part in every single day. While there is not one set place to be the best to buy tickets, make sure you get to see the show you want.
Answer: through online shopping

A: If you want to see Celine Dion's performance, you should buy the tickets _ .
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Q: Article: However urban life strikes you, cities worldwide have been growing ever more rapidly. Some of this growth has occurred in the developed world, but the most dramatic increase has been in the Third World. Almost all the world's population growth over the next 30 years will take place in the cities of developing countries By the year 2030, for the first time in history, 60 percent of the world's people will be living in cities. This is actually good news in some ways. "Cities are the fundamental building blocks of prosperity," says Marc Weiss, chairman of the Prague Institute for Global Urban Development, " both for the nation and for families." Industrial and commercial activities in urban areas account for between 50 and 80 percent of the gross domestic product (GDP) in most countries of the world" there's the crazy notion that the way to deal with a city's problems is to keep people out of them,"Weiss continued. "But the problems of the rural life are even more serious than those of the city." For better or worse, urban-watchers are clear on one point: The quality of life for most people in the future will be determined by the quality of cities. Those cities will be bigger than ever. And yet, population numbers by themselves don't determine a city's prospects; after all, Addis Ababa, Ethiopia, and Hamburg, Germany, have the same population. Nor is explosive growth necessarily the determining factor. "City problems," one authority points out, "mostly have to do with weak, ineffective, and usually unrepresentative city governments."
Answer: Big cities.

A:
The passage mainly discusses _ .
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