Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions

I regret not going to the airport to see her off.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

         People are living longer and, in some parts of the world, healthier lives. This represents one of the crowning achievements of the last century, but also a significant challenge. Longer lives must be planned for. Societal aging may affect economic growth and lead to many other issues, including the sustainability of families, the ability of states and communities to provide resources for older citizens, and international relations. The Global Burden of Disease, a study conducted by the World Health Organization, predicts a very large increase in age-related chronic disease in all regions of the world. Dealing with this will be a significant challenge for all countries’ health services.

      Population aging is driven by declines in fertility and improvements in health and longevity. In more developed countries, falling fertility beginning in the early 1900’s has resulted in current levels being below the population replacement rate of two live births per woman. Perhaps the most surprising demographic development of the past 20 years has been the pace of fertility decline in many less developed countries. In 2006, for example, the total fertility rate was at or below the replacement rate in 44 less developed countries.

       One central issue for policymakers in regard to pension funds is the relationship between the official retirement age and actual retirement age. Over several decades in the latter part of the 20th century, many of the more developed nations lowered the official age at which people become fully entitled to public pension benefits. This was propelled by general economic conditions, changes in welfare philosophy, and private pension trends. Despite the recent trend toward increased workforce participation at older ages, a significant gap between official and actual ages of retirement persists. This trend is emerging in rapidly aging developing countries as well. Many countries already have taken steps towards much-needed reform of their old-age social insurance programs. One common reform has been to raise the age at which workers are eligible for full public pension benefits. Another strategy for bolstering economic security for older people has been to increase the contributions by workers. Other measures to enhance income for older people include new financial instruments for private savings, tax incentives for individual retirement savings, and supplemental occupational pension plans.

       As life expectancy increases in most nations, so do the odds of different generations within a family coexisting. In more developed countries, this has manifested itself as the ‘beanpole family,’ a vertical extension of family structure characterized by an increase in the number of living generations within a lineage and a decrease in the number of people within each generation. As mortality rates continue to improve, more people in their 50’s and 60’s will have surviving parents, aunts, and uncles. Consequently, more children will know their grandparents and even their great-grandparents, especially their great-grandmothers. There is no historical precedent for a majority of middle-aged and older adults having living parents.

(Adapted from https://www.ielts-mentor.com)

Which of the following best describes the main purpose of the author in the passage?

Reading the following passage and mark the letter on your answer sheet to indicate the correct word that best fits each of the numbered blank from 34 to 38 

      Father's Day was created to complement Mother's Day. Like Mother's Day (26) ______ honors mothers and motherhood, Father's Day celebrates fatherhood and paternal bonds; it highlights the (27) _______ of fathers in society. Many countries celebrate it on the third Sunday of June, but it is also celebrated widely on other days. Historically, Sonora Smart Dodd was the woman behind the celebration of male parenting. Her father, the Civil War veteran William Jackson Smart, was a single parent who (28) _______ his six children there. After hearing a sermon about Jarvis' Mother's Day in 1909, she told her pastor that fathers should have a similar holiday honoring them. Although she initially suggested June 5, her father's birthday, the pastors did not have enough time to prepare their sermons, and the celebration was deferred to the third Sunday of June. The first celebration was in Spokane. Washington at the YMCA (Young Men's Christian Association) on June 19,1910. Since then it has become a traditional day (29) ________ year. 

      In recognition of what fathers do for their families, on this day people may have a party celebrating male parenting or simply make a phone call or send a greeting card. (30) _________, schools help children prepare handmade gifts for their fathers many days before the celebration.

Read the following passage and mark the letter A, B, C, or D indicate the correct answer to each of the questions.

      In the near term, the goal of keeping AI’s impact on society beneficial motivates research in many areas, from economics and law to technical topics such as verification, validity, security and control. Whereas it may be little more than a minor nuisance if your laptop crashes or gets hacked, it becomes all the more important that an AI system does what you want it to do if it controls your car, your airplane, your pacemaker, your automated trading system or your power grid. Another short-term challenge is preventing a devastating arms race in lethal autonomous weapons.

       In the long term, an important question is what will happen if the quest for strong AI succeeds and an AI system becomes better than humans at all cognitive tasks. Such a system could potentially undergo recursive self-improvement, triggering an intelligence explosion leaving human intellect far behind. By inventing revolutionary new technologies, such a superintelligence might help us eradicate war, disease, and poverty, and so the creation of strong AI might be the biggest event in human history. Some experts have expressed concern, though, that it might also be the last, unless we learn to align the goals of the AI with ours before it becomes superintelligent.

      There are some who question whether strong AI will ever be achieved, and others who insist that the creation of superintelligent AI is guaranteed to be beneficial. At FLI we recognize both of these possibilities, but also recognize the potential for an artificial intelligence system to intentionally or unintentionally cause great harm. We believe research today will help us better prepare for and prevent such potentially negative consequences in the future, thus enjoying the benefits of AI while avoiding pitfalls.

(source: https://www.beyondteaching.com/)

Which best serves as the title for the passage?