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.

Let me give you an 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
The answer to this example can be: Researchers did experiments on kids in order to find out _ .
Here is why: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

OK. solve this:
Article: If you need any help in planning your future, call in at the Education and Careers Expo  , which opened at the City Convention and Exhibition Centre yesterday. Expo gives you a unique opportunity to meet leading industrialists and educators. I spoke to several young people at Expo, and they all agreed how useful it was to have so much information under one roof. Duncan Kelly intends to take a university course in design after he leaves school. He was collecting some of the free literature when I spoke to him. "I'm not in a hurry to make a choice at the moment. I want to get all the information before I make up my mind." One feature of Expo is the careers seminars  , at which expert speakers outline their respective fields. Barbara Watts is already at university, in the second year of a law degree. She's decided to keep on studying after she graduates. She attended a seminar on international law. "The speaker was really good at getting across his message," said Barbara. "It was very helpful." But Expo isn't just for people who are still in education. It also offers help to those in employment, and to people who are considering retraining or a change of career. One advantage of Expo in that you can meet many prospective employers face to face, and talk to them frankly about your plans. As Charles Li told me, "Normally I wouldn't dare to go and talk to the manager of a company. But today I have talked to several managers. It's easy to meet them here, in a relaxed environment." He left school after Junior High and went to work in a factory to earn a living. He's looking at changing his career and perhaps tidying to be an accountant. The organizers expect over 200,000 young people to visit Expo, and there's no doubt that it's a bit of a squash  . But the opportunities available here certainly make up for any discomfort. So, if you need any help with your future, come along to Expo. You don't need a ticket. It's open today, Saturday and Sunday from 10 am to 7 pm, and entry is free to all. 
 Answer: it was great to get all the information in one place
Answer:
The interviewees at Expo all felt that_.