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Although the chemist’s initial experiment failed, she stumbled upon a strong new material in the process

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The award ceremony ......... for another hour

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I wouldn’t have believed it if I..................... it with my own eyes

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Jim ____ his leg when he ____ golf.

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Remember to take _______your shoes when you go into the temple

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The gale ....... every window in the house

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Trekkers should be prepared to _______ it as there are few facilities in remote areas

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Can you believe he set the charity ___________ when he was just 15?

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The workers ____ a new representative

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He is always busy. He has______ time to relax

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The loss of biodiversity has a serious ____ on the survival of wildlife and humans

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The equator is an _____ line that divides the earth into two

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Urbanization programmes are being carried out in many parts of the world, especially in densely (33) _____ religion with limited land and resources. It is the natural outcome of economic development and industrialization. It has brought a lot of benefits to our society. However, it also (34) _____various problems for local authorities and town planners in the process of maintaining sustainable urbanization, especially in developing countries. When too many people cram into a small area, urban infrastructure can’t be effective. There will be a (35) _____ of livable housing, energy and water supply. This will create overcrowded urban districts with no proper facilities. Currently, fast urbanization is taking place predominantly in developing countries where sustainable urbanization has little relevance to people's lives. Their houses are just shabby slums with poor sanitation. Their children only manage to get basic education. Hence, the struggle for (36) _____ is their first priority rather than anything else. Only when the quality of their existence is improved, can they seek (37) _____ other high values in their life

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He was reluctant to _____________ tea with his most cherished pottery pot when receiving guests

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It’s high time to _______ a stop to bullying and body shaming in schools

When____________ cool, we often walk along the streets.

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It is true that digital manufacturing does cut out the middle-man. More and more routine, repetitive assembly tasks will be taken (25) _____ by machines. But as certain jobs disappear, new ones open up in other parts of the factory. Germany in many ways exemplifies this trend. Today, German manufacturers (26) _____ three times more robots than U.S. companies, but they also still employ more humans. Relative to the size of our economies, German's manufacturing workforce is twice the size of America's. From its very beginning, the fourth Industrial revolution has never presented manufacturers with an either-or choice - robots or humans. It has always been about combining the talents of (27) _____ . (28) _____, it is the convergence of artificial and human intelligence that will enable manufacturers to achieve a new era of speed, flexibility, efficiency and connectivity in the 21st century. Machines have the ability to assemble things faster than any human ever could, but humans possess the analytics, domain expertise and valuable knowledge (29) _____ to solve problems and optimize factory floor production

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____ the temperature, ____ water turns into steam

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They called the police as soon as they heard someone break ___________ their house

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As a sales representative, ------- have to develop your interpersonal communication skills.

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Drone racing is an exciting new sport, that has become popular faster than (1)______ other sport before it. Pilots steer small and lightweight, but high-powered drones along courses with obstacles. They fly through gates and around flags at speeds of over a hundred miles an hour. They control the drones using VR-like headgear. Every drone has a camera (2)______ to it so that spectators can also view flights either on a big screen or with special headgear. The races take place either outdoors - in big stadiums, or indoors in old warehouses and sports arenas. (3)______ are short because the battery time of drones is limited. (4)______ drone racing started only a few years ago there are already international competitions that take place all over the world. In professional leagues, drone pilots compete for thousands of dollars. In March, the World Drone Prix was staged in Dubai. A 16-year old British teenager not only one the race but also received a prize money of 250 000 dollars. Television and other media have become aware of drone racing. ESPN, an Amercian sports channel, will be broadcasting international drone races starting this August. Races are also recorded and uploaded to YouTube and other video platforms (5)______ they can be viewed over and over again