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It’s a tough job, and we’re relying on you to carry it .......

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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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If he ____ this homework to do, he would have gone out with his friends.

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It became very ------- that the project wouldn't be finished on time after the planning stage was extended by one month

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Smart city projects are big investments that ____ social transformation,......

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Their relationship goes ......... when they were at college together

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Thanks to the back-up generators which were ------- installed, we could keep the plant operational during the power outage

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He wasn't aware that only one mistake could________his chances of getting the job

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Those who are engaged ____ an occupation can provide you ____ a truthful account ____what it's really like to work ____ it.

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The weather is really bad today in your country, ______?

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It’s time you…….your way of living

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People of different countries have quite different life styles. We American are wasteful people, (25) _______ saving. Our grandfathers began this pattern, for nature’s resources seemed so plentiful that no one ever imagined a shortage. Within a few years of the first Virginia settlement, for example, pioneers burned down their houses when they were ready to move to west. They only wanted to have the nails for (26) _______ use. No one ever gave a thought to the priceless hardwoods that went up in smoke. We the people in the United States destroy many things that other peoples save. I (27) _______ this when I was living in Britain. I received a letter from one of England’s largest banks. It was enclosed in a used envelop that had been readdressed to me. Such a practice would be (28) _______ in the United States. American banks, (29) _______ the smallest, always use expensive stationery with the names of all twenty-eight vice-presidents listed on one side of the page

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

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Jean and Tim are talking about peer pressure.
Jean: “Classmates may have a great impact on how children think.”
Tim: “_______. They even want to hide their intelligence in the hope of being accepted in a group.”

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She came into _______ with other young writers in Paris

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How many students ________ English?

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Mary's parents are concerned that her grades are ____ worse this year

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My cousin and I ____ on the computer when there ____ a power cut

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Forty-niners ............. to California for gold in 1848

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A: I wish I hadn’t criticised Mark’s drawing yesterday because he hasn’t spoken to me today. Do you think he’ll come to my party on Friday?
B: Possibly, he ________ you by then

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Not even once___________ the truth