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 ______________ colours like blue and yellow can make people feel happy

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Everyone wants to reduce pollution. But the pollution (30) _____ is as complicated as it is serious. It is complicated because much pollution is caused by things that benefit people. (31) _____, exhaust from automobiles causes a large percentage of air pollution. But the automobile provides transportation for millions of people. Factories discharge much of the material that pollutes the air and water but factories give (32) _____ to a large number of people. Thus, to end or greatly reduce pollution immediately, people would have to (33) _____ using many things that benefit them. Most of the people do not want to do that, of course. But pollution can be gradually reduced in several ways. Scientists and engineers can work to find ways to lessen the amount of pollution that such things as automobiles and factories cause. Governments can pass and enforce laws (34) _____ require businesses and traffic to stop, or to cut down on certain polluting activities

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Climate changes________ the existence of the species

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I think I put my pants ____________ backward!

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Tim  …………………4 movies when he had free time.

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Peter is sometimes unsuccessful because he’s not ______of other people’s opinions

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You pass an empty house and see a notice outside it which reads: "___________

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Many groups worldwide are trying to develop vaccines that protect against a wide range of coronaviruses and prevent (26) _______ pandemic. These efforts have now been boosted by the discovery that some healthcare workers had pre-existing immunity to the SARS-CoV-2 virus during the first wave of the pandemic. During the first half of 2020, around 700 healthcare workers in the UK were tested weekly as part of a crowdfunded study called Covid Sortium. Most of these people, who wore protective equipment, never tested positive for covid-19 in PCR tests or developed covid-19 antibodies – proteins that (27) _______ to the outside of viruses, preventing cells from being infected. (28)_______ , when Leo Swadling and Mala Maini at University College London and their colleagues looked more closely, they found some of those (29) _______ tested negative had a protein in their blood that is linked to covid-19 infection, as well as T cell responses to the SARS-CoV-2 virus. T cells are (30) _______ of the immune system

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It took weeks, but my nasty cough has finally gone ___________

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Only if I had known the difference___________ the more expensive car

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The government has _______ tough measures to stamp out corruption in the country

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A skilled population is the key ____ a country's sustainable development and stability.

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The club offers an opportunity for like-minded people to ..........

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I went to the airport ____ to meet her, but she didn't arrive

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My sister and I ________ television in the living room now

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An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. At the Earth's surface, earthquakes are recognized (25) _____ vibration, shaking and sometimes displacement of the ground. The vibrations may vary in (26) _____. They are caused mostly by slippage within geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. The underground point of (27) _____ of the earthquake is called the focus. The point directly above the focus on the surface is called the epicenter. Earthquakes by themselves rarely kill people or wildlife. It is usually the secondary events (28) _____ they trigger, such as building collapse, fires, tsunamis (seismic sea waves) and volcanoes, that are actually the human disaster. Many of these could possibly be avoided by better construction, safety systems, early warning and (29) ____ planning

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The U.S. higher education system offers unparalleled choice to international students in the types of institutions, academic and social environments, entry requirements, degree programs, and fields of study that are available

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Make sure the kids wash ____________ before dinner

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I ________ Mark for hours and hours and he hasn't answered. I'm really angry with him

..................time is it? - It's five o'clock.

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She is afraid of the dentist, so she always puts off ____ till the last possible moment