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: At first, the earth's surface layer was made up of huge blocks of hard, solid rocks. Then slowly, the rocks broke up into smaller and smaller pieces. Finally stones, pebbles and grains of sand were formed. Many sorts of plants and animals lived and died on the surface of the earth. Their remains mixed up with the stones, pebbles and formed soil. The outmost layer of the earth is soil. There are many ways in which large pieces of rock break into smaller ones. Wind, water, heat and cold help to break up rocks. When winds blow grains of sand against a large rock for a long time, the softer layers of the rock are slowly worn away. These leave holes and cracks in the rock, which become bigger and finally the rock breaks up into smaller pieces. The moving water of streams and rivers also helps to break up rocks. As the water moves along, it carries with it small pieces of rock. These rub the larger ones. Thus, the larger rocks are worn down to smaller pieces. The heat of the sun is also helpful to breaking up rocks. When the sun shines, the rocks become very hot. If these rocks are suddenly cooled, they may crack. Ice also plays a part in making soil. Water in the cracks can turn into ice in cold weather. As this happens, it becomes bigger and the cracks become wider, and finally break into smaller pieces.
Answer: forms very slowly

SOLUTION: According to the passage, soil _ .

PROBLEM: Article: Group buying is one of the fastest growing trends in South Africa today. Industry leaders are confident the growth potential remains strong since group buying is location-specific. Start-up costs are low and profit room remains high, so many sites continue to receive invested money despite widespread criticism and Facebook's decision to _ deal business due to privacy concerns. In the early stages of all industries, some companied fail because they cannot compete with stronger companies in difficult economic conditions. To deal with difficult conditions, an alarming number of businesses are developing group buying websites in places like China and India, so the increase of group buying in South Africa is nothing more than a natural progression into the international mainstream. The group buying concept is fairly new and consumers have accepted this concept because they can now make full use of the rich information available on the Internet. Group buying is convenient and easy so it works. Anyone can view a site, join a mailing list, subscribe to RSS or print out a coupon . The current group buying structure offered by the industry leaders works although there are still challenges to overcome. Perhaps, the future of group buying is tied to the joining together of social media and mobile devices. Mobile devices are with us wherever we go and almost everyone is using some type of social media site like Facebook or Twitter to stay informed. Using GPS and social media technology to provide real time location-specific promotions would be beneficial to every consumer looking for the best deals in town. Pause for a moment and think about it! What is better than signing on to your phone while having fun in town and you receive a real time information that your favorite shop across the street is offering a killer dial? The future of the group buying in South Africa is bright and we can expect to see more advanced approaches to this concept in the future. In addition to the technological advances consumers will see the range of promotions expand to include new products and services.
Answer: group buying is an international trend

SOLUTION: The author sets China and India as examples to show that _ .

PROBLEM: Article: I decided to have dinner in the hotel, for I arrived late one night on a business trip. As I was finishing my meal, an elderly couple came in to dine. They were holding hands and had lovely smiles on their faces. They sat three tables from me. I was amazed at the love they showed for each other. It seemed to strike home all the more, because it was shortly after ending a 20-year marriage and I still had pain in my heart. My waiter was also their waiter. As I paid my bill, I inquired as to what their bill was. He informed me, and I gave him $40 to pay their bill. He asked if I knew them and I told him "No, I just wanted to repay them for the love that they were showing to each other," and then I departed. The next day I entered the restaurant to dine before my departure. After I had been seated, the waiter who served me the night before told me that the strangest thing happened after I left the restaurant. When the elderly couple went to pay for their meal, they were informed that it had been paid. When they inquired who had done this, the hostess told them they had no idea who I was, just retelling what I said. The couple were amazed. They looked around, asked for the bill of two young couples who were seated together, paid their bill and departed, saying "Love begets Love" to the amazement of the hostess and waiter. I smiled and said "That's nice," and proceeded to order my meal. About 45 minutes later, I finished my meal and was about to head out, but my waiter was nowhere to be found. I waited and waited and finally walked over to the hostess stand and explained that I needed to pay for my meal and hurry to the airport. She smiled and explained that I would not have to pay for my meal, because both the waiter and she felt compelled to pay my bill due to the joy that was brought to the faces of the elderly couple and the amazement of the young couples. When I told her that they didn't have to do that, she said with a smile "Love begets Love."
Answer: prove a show of love really makes a difference

SOLUTION:
The writer's purpose of writing the passage is to _ .