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.

[EX Q]: Article: There are over one million superstitions ,and most people believe at least one or two of them. Many people are superstitious about numbers. They think that there are lucky numbers and unlucky numbers. The number 13 is often considered unlucky. In some parts of the world, buildings have no 13th floor and streets have no houses with the number 13. In Japan,"4"is considered unlucky because in Japanese the word"four"is pronounced the same as the word"death". The Japanese never give gifts of four knives, four napkins, or four of anything. What are the lucky numbers? Seven is a lucky number in many places, and"8"is considered a lucky number in Japan and China. In China, businesses often open on August 8,and many couples register to get married at eight past eight on August 8. Superstitions about numbers are so widespread that some people--called numerologists--make a living giving advice about numbers. In 1937,when the Toyoda family of Japan wanted to form a car company, they asked a numerologist if"Toyoda"would be a good name for the company. The numerologist said it would not be. He explained that"Toyota"would be a better name for the company. The family took his advice. As a result, millions of people drive"Toyotas"and not"Toyodas. " There are many other kinds of superstitions. There are superstitions about eating, sleeping, sneezing and itching. There are superstitions about animals and holidays and horseshoes. There are even superstitions about superstitions. Those superstitions tell people how to _ bad luck. When the Japanese bump heads, they immediately bump heads again. According to a Japanese superstition, the first bump means their parents will die, but the second bump "erases" the first bump. To reverse bad luck in general, people turn around three times, turn their pockets inside out, or put their hats on backwards.
Answer: accepted by many people in the world
[EX A]: It can be inferred that superstitions about numbers are _ .

[EX Q]: Article: A few weeks ago, a friend of Smile Groups gifted me PS100 to do good deeds with. Since then I have used the money in the U.K. and the U.S and have helped some strangers, generally raising a lot of smiles. They have warmed my heart, but none so much as the gift I was able to give just an hour ago. I was in a shop looking at the second-hand books. It just so happened that the bookshelves were next to the toy section. After a few minutes I became aware of a group of women standing behind me. They were poorly dressed and spoke in what sounded like an eastern European language. As the little girl, about three years old, came over to the toy section, immediately her attention was caught by a toy. She spoke to her mother and in halting English her mother asked the shop assistant how much it cost. PS3 was the answer. The mum looked down at her child, perhaps calculating what she still had to buy and how much money she would have left. Then she simply shook her head. The child didn't react badly as some children might. Being told no was obviously not a new experience for her. But she couldn't keep the disappointment from her face. I had the total of four pounds in my pocket, two PS2 coins. A moment later, I tapped the mother on the shoulder, and pointed to the coins which I had left and said, "Buy her a dolly, too." I didn't hang about to see the end result. _ . I made my way out of the shop and into the sunshine. The money my friend gave me was an investment in the happiness of the world. Was there any better way, I wondered, to get so much happiness with so little money than to buy a toy for a little girl?
Answer: was greeted with smiles
[EX A]: When helping strangers with the money, the author _ .

[EX Q]: Article: In 1966,Allen and Beatrice Garden, two professors at the University of Nevada in Reno, had a bright idea.They were interested in the evolution of language and the language abilities of great apes . Previous attempts to teach chimpanzees to talk had ended in failure and the matter was considered by most people to be closed. But the Gardens realized that speech and the language are not the same thing. Many deaf people, for example, are unable to speak but are perfectly able to communicate by gestures that have all the features of spoken language. The Garders suspected that previous experiments had failed because chimpanzees are physically unable to speak. They therefore decided to try teaching a chimpanzee to sign in the way that deaf people do. And their chosen _ , a female chimpanzee named Washoe after the country in which the university is, proved to be a skillful pupil. Though there is still debate about whether what Washoe learned was really equal to human language, there is no doubt that she learned a lot of words. All of this, however, raises a second question. If Washoe can learn a complex vocabulary of gestures from people, do they have such vocabularies naturally ? To examine that possibility, Amy Pollick and Frans de Waal of Emory University have looked at gestures and expressions in chimpanzees, Signaling by facial and oral expressions is common among primates . Signaling by gestures is limited to great apes. The researchers supposed that the meaning of expressions has been fixed by evolution while the meaning of gestures is learnt. If that were true, particular sorts of facial and oral expressions would occur only in particular circumstances, and this would be the same across groups and even species. The same gestures, on the contrary, would be used in different circumstances. The researchers found exactly what they expected. Expressions almost always occurred in the same circumstances in different groups and different species. Gestures seemed to have completely different meanings. Moreover, even within a single group,the meaning of a gesture could vary with circumstances. It's also worth remembering that gesture is still an essential part of human language, even for those with normal hearing. The old joke that the way to make an Italian speechless is to tie his hands together has much truth in it. Evolution does not come up with complex structures in a single leap. They are built up step by step. This study suggests that the step of speech may have been built on mental features that were acquired millions of years ago when the ancestors of apes and men began to wave meaningfully at each other.
Answer: gestures are limited to a certain type of primates.
[EX A]:
According to Pollick and Waal gestures are different from facial and oral expressions in that _ .