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: How to look good in a photo? What should you do if you want to have a nice photo taken? Whether it's work or fun, the most important thing is lighting. If you get bad lighting, you will look bad, too. Know where the light is. You don't want it below you or above you, you want it to shine directly at you. The key thing is no shadow. If you are being photographed outside, do it in the morning, or wait till the 2 o'clock shadow has passed. Also don't let pictures in the magazines stress you out--all the pictures are taken by great photographers. And all the faces have had pimples(, ) taken out by computers. Tip your head and learn what angles work with your face; everyone is different. So you have to learn what suits you. You can practice in Photo Booth for as long as it is your turn, to learn what angles suit your face. Tip your neck to make it look longer, make eye contact with the camera. No one can look bad if they smile. For long legs, point one leg into center of the frame and get the photographer to shoot looking up your body. For just leg shots, lie upside down and raise legs in the air for the best angle. And your legs will look thinner and be in better shape. Keep shoulders back. Always have mouth slightly open, enough to put a penny between your lips, as this will make your lips look fuller. Lower your eyes and then look up just as shutter is clicked for full eyes. Delete any evidence of a less than perfect photogenic moment, everyone has off days.
Answer: directly at you
Student:
If you want to look good in a photo, the light should be _ .