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_______ the person is, the more privilege he enjoys.

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Before ................., they used horse-drawn wooden carts

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Several people have ..... sick today

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After she had been droning on for nearly five minutes, I just had to cut her .........

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_______ enough money, Thomas was able to buy his first car

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Make sure the kids wash ____________ before dinner

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Only by saving money___________ a house

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It seems entirely natural to us that there are teams of scientists in universities and (46) _____ institutions around the world, attempting to discover the way the world works. (47) _____, it hasn’t always been that way. Although the scientific method is now four or five hundred years old, the ancient Greeks, for example, believed that they could (48) _____ the cause of natural events just by the power of thought. During the 17th century, more and more people began to realize that they could test their scientific ideas by designing a relevant experiment and seeing what happened. A lot of (49) _____ was made in this way by individual scientists. These men and women often worked alone, carrying out research into many different areas of science, and they often received very little (50) _____ for their hard work. At the start of the 20th century, though, it became clear that science was becoming more complicated and more expensive. The individual scientists disappeared, to be replaced by highly qualified teams of experts. Modern science was born

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The strongest dump trucks work in rock quarries, ................. tons of rocks and soil at one time.

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________ is special clothing to wear when astronauts work outside in space

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Two of his teeth need _________

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When we arrived, the people next door invited us ____ a drink with them

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You should ________ the form and hand it in as soon as possible

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Seldom___________ treated like that

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“Any news from Vicky?” “Yes. She _______ tomorrow on the 9:15 train.”

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I ……some unusual educational beliefs

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I'll come to the party a little later. I just need to polish ___________ this essay first

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There has not been a great response to the schedule, ____?

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She has had a…………of disasters.

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A well-known large natural lake is Lake Tahoe, ................. straddles the California-Nevada border.

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I went _______________ cycling to work at the beginning of the summer, and I haven't been healthier!