instruction:
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.
question:
Article: America, has always had people of many different nationalities and languages. The 1990 census indicates that almost 14% of Americans speak a non-English language at home. Yet only 3% reported that they spoke English "not well" or "not at all ". That means that slightly more than one out of 10 Americans could be considered _ . Besides that, many high school and college students---and even some elementary school students---are required to take a foreign language. Actually, a growing number of Americans are coming to appreciate the benefits of using different languages. Ethnic enclaves have preserved the language and culture of American immigrants. Some local residents can function quite well in their native language, without having to bother learning English. Regions such as southern Florida and the Southwest have numerous Spanish-speaking neighborhoods. In fact, Spanish speakers---numbering over 17 million---form the largest non-English linguistic group in America. But Chinese, Vietnamese, Italian, Polish and many other ethnic group add to the linguistic flavor of America. Foreign languages are so commonly used in some ethnic neighborhoods that visitors might think they are in another country! Although some Americans welcome this linguistic and cultural diversity, others have begun to fear that the English language is being threatened. Since the 1980s, the "English Only " movement has sought to promote legislation which would establish English as the "official language" and restrict the use of non-English language. However, some groups, including TESOL, the organization for Teachers of English to Speakers of Other language, object to such "language restrictionism". But so far, 19 states have passed "English Only" legislation, and the topic is the focus of an ongoing debate. Whether or not English is the official language of the United States, it remains the "language of wider communication". Nearly everyone recognizes the need to develop the ability in using English in order to do well in America. American also recognize that English is the international language, and people with good English skills can get by in many international settings. On the other hand, in a world growing increasingly smaller, second language skills can be a great favor. They can build cross-cultural bridges and give people an edge in a variety of career field. Indeed, lack of foreign language skill can limit one's chances for advancement and keep one in a cultural dead-end street.
Answer: their native languages are commonly used in their neighborhoods
answer:
Ethnic groups have preserved their native languages because _ .

question:
Article: One day, our teacher talked about the stereotypes of different people. I learned the stereotypes of Mexicans: they are poor and lazy. I was ashamed of who I was because I am a Mexican and thought that it would be hard for me to be successful. One day in the eleventh grade, we had a discussion in history class. The kid next to me said, "You look like one of those Mexicans who sell food in the street." I told him that he was also a Mexican. He said, "I don't look as Mexican as you. I have light skin." That was the first time that I'd heard someone say, "I don't look as Mexican as you." Could it be that the people who succeed in this country are those who look like an American? Towards the end of the eleventh grade, I was asked to write a restaurant review. When I went to a restaurant, I saw the waiter talking to the chefs and thought they were judging me. I felt nervous but I couldn't leave because I had to write the review. Minutes later, the waiter stopped talking and took my order. He was happy to serve me. I started asking him questions about his restaurant and I guessed that he liked that because he gave me a free dish. After I left the restaurant, I thought, "That's wasn't bad at all." Not all people think of me as a failure. Now, I am running for the school president in my senior year. I am not sure if I can win, but I tell myself that if I want to be successful, I have to stop despising myself. I want to prove that Latinos can be successful. I do belong to the United States. An American is a person who overcomes struggles to become successful and that is what I'm doing.
Answer: he was actually popular with people around him
answer:
The author's experience of finishing his restaurant review helped him realize that _

question:
Article: We all know that the normal human daily cycle of activity is of some 7-8 hours' sleep alternating with some 16-17 hours' wakefulness and that the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can be modified. The question is no mere academic one. The ease, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakefulness, sleeping during the day and working at night. Unfortunately, it is often the case in industry that shifts are changed every week; a person may work from 12 midnight to 8 a.m. one week, 8 a.m. to 4 p.m. the next, and 4 p.m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently. The only real solution appears to be to hand over the night shift to a number of permanent night workers. An interesting study of the domestic life and health of night-shift workers was carried out by Brown in 1957. She found a high incidence of disturbed sleep and other disorders among those on alternating day and night shifts, but no abnormal occurrence of these phenomena among those on permanent night work. This latter system then appears to be the best long-term policy, but meanwhile something may be done to relieve the pressure of alternate day and night work by selecting those people who can adapt most quickly to the changes of routine. One way of knowing when a person has adapted is by measuring his body temperature. People occupied in normal daytime work will have a high temperature during the hours of wakefulness and a low one at night; when they change to night work the pattern will only gradually go back to match the new routine and the speed with which it does so parallels, broadly speaking, the adaptation of the body as a whole, particularly in terms of performance. Therefore, by taking body temperature at two-hour intervals throughout the period of wakefulness, it can be seen how quickly a person can adapt to a reversed routine, and this could be used as a basis for selection. So far, however, such a form of selection does not seem to have been applied in practice.
Answer: the disturbance of the daily life cycle of workers who have to change shifts too frequently
answer:
The main problem of the round-the-clock working system lies in _ .