Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Article: Homework can put you in a badmood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Answer: whether mood affects their learning ability
Solution: Researchers did experiments on kids in order to find out _ .
Reason: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

Now, solve this instance: Article: Heather Jack and her family, including her two children, usually spend the Christmas holidays preparing a feast--for others to eat. Last Christmas Eve, they went to a house in the neighborhood and prepared a dinner for an elderly woman and her son, who has muscular dystrophy . They stayed for an hour and chatted before heading home to prepare for a visit from Santa . "I think it is that kind of direct experience that many find so meaningful," says Heather, president and founder of The Volunteer Family, a Boston-based organization dedicated to matching families with volunteer opportunities, both during the holidays and year-round. "It's a great way for parents to involve the kids." In a holiday season that stretches from before Thanksgiving to just after the New Year, it's nice to hear stories about people with their children giving instead of receiving. Last December Gary and Debra Danoff and their two teenage sons drove to the Washington, D. C. Jewish Community Center(JCC) and spent Christmas morning in the Center's kitchen preparing a feast for homeless shelters. By choosing to prepare meals for the homeless, the Danoffs bring together a belief in community service with their love of cooking, "It feels good to prepare food with our kids for other people at Christmas," says Gary. "We want them to know that many people don't have the ability to go to the supermarket and pick the foods they want to eat and pay for them." The Danoffs were in good company. Across the city, at least 1000 volunteers with their children went across the region to provide food to the poor people as part of the D. C. JCC's annual "December 25th Day of Service", now in its 22nd year.
Answer: visiting one of their good friends in other district
Student:
The Heathers did all the following things except_last Christmas Eve.