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Although some societies are _______ undeveloped, their languages - from a linguist's point of view - are very complex.

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She finally finished the backlog of emails that had accumulated over the vacation period.

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If only I ____ the books on the reading list before I attended the lecture on My Son sanctuary

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He looks tired. He __________a rest

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 ______________, he will have had a full day and will be ready for sleep

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Each athletes has to take part in the Olympic Games in the true spirit of…..

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The guests should tell the receptionist in advance if they have any _______ diets

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She looks very exhausted because she _______ all night

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While Tom and I ____, someone ____ at the door.

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Andrea can speak English fluently, _______?

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People usually can get a sufficient amount of the calcium their bodies ............. from the food they consume.

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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 pain and violence of his childhood were ...... into his marriage

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The price for footwear has declined dramatically, so many people have taken advantage to buy their favourite shoes

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He _____ the guitar since he was twelve years old

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The famous physicist Albert Einstein ____ for a $1 to $5 donation before scribbling his name on a piece of parchment, and ____every cent to various charities

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You and I have to go home now,______?

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We just had soup ________ a full meal because we did not have much time

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I thought it was time to come ______________ with everybody about what I'd been doing

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Many of those old buildings will soon be pulled ____________

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There should be no discrimination on ____ of sex, race or religion