TASK DEFINITION: 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.
PROBLEM: Article: We all enjoy the colors of autumn leaves. Did you ever wonder how and why a fall leaf changes color? Where do the yellows and oranges come from? To answer those questions, we first have to understand what leaves are and what they do. Leaves are nature's food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide from the air. Plants use sunlight to turn water and carbon dioxide into glucose, which is a kind of sugar. Plants use glucose as food for energy and as a building block for growing. The way plants turn water and carbon dioxide into sugar is called photosynthesis, which means " putting together with light. " A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is what gives plants their green color. As summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to begin getting ready for winter. During winter, there is not enough light or water for photosynthesis. The trees will rest, and live off the food they stored during summer. They begin to shut down their food-making factories. The green chlorophyll disappears from the leaves. As the bright green fades away, we begin to see yellow and orange colors. Small a-mounts of these colors have been in the leaves all along. Covered up by the green chlorophyll, we just can't see them in summer. The bright reds and purples we see in leaves are made mostly in the fall. In some trees, like maples, glucose is trapped in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn cause the leaves turn this glucose into a red color. The brown color of trees like oaks is made from wastes left in the leaves. It is the combination of all these things that make the beautiful colors we enjoy in the fall.
Answer: introduce the topic of the passage

SOLUTION: The writer asked two questions in the beginning in order to_.

PROBLEM: Article: Games are a good form of teaching or training children as they combine fun with knowledge. They make the teaching or training activities more interesting. They are useful in all fields of teaching and training. Help your child discover just how much more is going on in the world around them with this listening game. It will also provide a few minutes of peace and quiet in what is probably a very noisy and busy day. A discussion of the sounds you each hear will also assist in language development and an ability to articulate that which was heard. The sit-and-listen game is especially helpful if your child is at the stage of developing language skills: listening, speaking and so on. Method: This is a very relaxing activity in which you both need to sit still and silent for about 30 seconds and just listen to the world around you. You are both trying to hear as many different things as you can, whether they are cars, people, airplanes, water running, the wind in the trees or any other kinds of daily sounds. After the given time is up, having a chat about what you both could hear. It is a good idea to ask your little one some open ended questions to promote their language development, such as: "What were the loudest sounds you heard?" "What were the closest sounds you heard?" "How many cars did you hear?" "How far away do you think that barking dog might live?" "What sounds did you hear which you did not expect to hear?" Note: As an extension activity you may wish to draw a picture of all the things you could hear.
Answer: your child's language ability

SOLUTION: The sit-and-listen game is intended to develop _ .

PROBLEM: Article: On Halloween Night, children go trick-treating in their neighborhoods. Dressed up as ghosts, skeleton devils, and various other characters, children knock on doors to collect their treats. Seldom do they actually perform a "trick". It is thought that trick-or-treating comes from an old English custom. On All Souls Day, poor people went begging and promised to say prayers in exchange for food. Apple bobbing, still a favorite Halloween game, was originally an ancient ceremony honoring the harvest time. A jack-o'-lantern is placed on porches and windows to tell children that treats are available. The legend was that a man named Jack could enter heaven because he played tricks on the devil. As punishment, he had to wander the earth carrying a lantern waiting to be judged fit to get into heaven. People believed that Halloween marked the connection between the world of the living and the world of the dead. This meant that ghosts would _ the earth on this night. Some believed that these ghosts would go back to the homes they lived in before they died. Thankfully, Halloween is an amusing night when children can dress up and get a bag full of candy. We don't have to worry about ghosts. Or do we?
Answer: honor the harvest time

SOLUTION:
Apple bobbing was an ancient ceremony held originally to _ .