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: Of all nature's disasters, forest fires are often considered the most frightening. Moving at lightning speed, huge walls of flames can burn acres of land in just a few minutes. And although technology, including the use of tire-retardant chemicals, has greatly helped the fight against forest fires, they still take great damage. According to the National Interagency Fire Center, the fire season last year was the worst on record in terms of the number of fires and acres burned. There were 96.385 fires and9,873429 acres affected by fire in a year that was 125% more destructive than the 10-year average . These fires cost the federal govemment $1.5 billion to fight, and this figure does not include the money spent by local and state govemments as part of the effort. Fires in the southern states represented half of the national total last year. with Texas. Oklahoma and Arkansas being home to an usually high amount of activity. Wildfire have also taken place in Western states such as California, Colorado. and Alaska throughout the past 10 years. It is said that two-thirds of forest fires are started accidentally by people. almost one quarter are purposely set, while lighting causes 10%. Forest fires can have advantageous effects. Charcoal enriches soil, and some plant species grow well after. The cones of the jack pine tree, for example, will not spread their seeds unless there is heat. Douglas fir trees grow best in open sunlight areas after fire.
Answer: they spread too fast and make great damage.
[A]: Forest fires are considered to be the most frightening because _ .

[Q]: Article: On October 23, 2011, David Pologruto, a high school physics teacher, wasstabbed by his smart student Jason Haffizulla. Jason got straight A's and was determined to study medicine at Harvard, yet this was his downfall. His physics teacher gave Jason a B, a mark Jason believed wouldundermine his entrance to Harvard. After receiving his B, Jason took a butcher knife to school and stabbed his physics teacher. How can someone as smart as Jason do something so dumb? Studies show there is little or no correlation between IQ and emotional intelligence. During my early university years, I regarded myself as an intelligent guy. I got good marks in mathematics, physics, and other subjects. I thought such skills would surely give me a bright future. After one year of study with decent marks, I began to see two major classes of students. The first category of students turned up to few lectures, partied every weekend, enjoyed a great social life, and did minimal work to pass courses. The second category of students were intelligent and hard workers who got good grades and were very focused on their studies. Surely would these intelligent and hard-working students find the great jobs before the other lazier class of students? Not so. Students are often shocked upon graduation that their qualifications are not as important as they once thought. Graduates enter the workforce only to realize that co-workers hate them and less intelligent people are the ones receiving promotions. Educational skills are useless in some industries when interpersonal skills are absent. You can have great ideas, theories, and solve complex problems, but if you cannot effectively communicate in a persuasive and exciting manner by relating to your fellow humans, you will face an uphill battle in whatever challenges you encounter. It's not that people dislike you because of your intelligence; it's that people dislike you because you're rude and not understanding. The intelligent person with poor communication skills is insensitive or unaware of others' emotions.
Answer: he got a worse mark than usual
[A]: Jason Haffizulla stabbed his physics teacher because _ .

[Q]: Article: Children will find it more difficult to buy cigarettes as vending machines selling tobacco will be officially banned in England today.According to the British Heart Foundation(BHF),around 200,000 young people start smoking regularly in England each year and 11 per cent of l1-to15-year-old regular smokers in England and Wales get their cigarettes from vending machines. Betty McBride, Director of Policy and Communications at the British Heart Foundation,said,"Thousands of children who are at risk of addiction regularly get tobacco from these machines,which of course,don't ask them to prove their age.With the tobacco industry increasingly depending on young smokers to keep their profits,they're fighting tooth and nail to stop any changes that might hit their bottom line." The ban, which makes it illegal to sell tobacco from vending machines and requires shopkeepers to ensure all tobacco advertising on the machines is removed,comes into force in England today.It is the first ban in Europe to prohibit selling cigarettes from vending machines.which shows the determination of England to fight against smoking. Other measures to protect young people from the dangers of smoking are also on the way.In April 2013 large retailers in England and Scotland will have to get rid of all tobacco displays and small shops will be expected to do that from April 2015.Wales and Northern Ireland also plan to make similar regulations. The UK Government is due to begin a public consultation before the end of the year on whether to introduce plain packaging for cigarettes which would reduce their marketing appeal to young people,help to make health warnings more effective and,alongside other measures,help to reduce the number of smokers in the long term.
Answer: keep a record of every purchase
[A]:
According to the text,vending machines selling cigarettes _ .