Choose the best answer to complete the following sentences.

A/ an ____ species is a population of an organism which is at risk of becoming extinct.

Sports organizations in Africa are giving their full support to the scheme which will help make the game more accessible to thousands of young people and could have a beneficial effect on the country's performance in future World Cup championships. People in Sheffield are,  ____, being asked to donate any football boots, astro boots or football trainers of any size to the scheme.

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Upon his retirement, Mr. Ross was highly commended for his vital contributions during the company's  ___________  years.

Two unique features of the Arctic they are lack of precipitation and permanently frozen ground.

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 Besides, several programmes should be ____ that spreads the world of the conservation of the elephants in the public.

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The old man has saved a lot of money for his ..................... 

Maintaining biodiversity is_________ great importance of preserving the precious and rare animals.

Scientific progress supplies us with .......................

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The United States has a ............. of around 250 million.

If I __________ you, I would spend more time learning English. 

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WHY DO ANIMALS GO EXTINCT? Different kinds of animals have appeared and disappeared throughout Earth’s history. Some animals go extinct because the climate (41)_______ they live changes. The climate may become wetter or drier. It may become warmer or cooler. If the animals cannot change, or adapt, to the new climate, they die. Some animals go extinct because thay cannot (42) _______ with other animals for food. Some animals go extinct because they are killed by enemies. New kinds of animals are always evolving. Evolving means that the animals are changing (43) _______ from generation to generation. Small differences between parents, children, and grandchildren slowly add up over many, many generations. Eventually, a different kind of animal evolves. [evolve: tiến hóa] Sometimes many of the animals on Earth go extinct at the (44) _______ time. Scientists call this a mass extinction. Scientists think there (45) _______ at least five mass extinctions in Earth’s history. The last mass extinction happened about 65 million years ago. This mass extinction killed off the dinosaurs.
(44)..........................

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She describes herself .......................... a fashion designer.

____ as it was at such a time, his work attracted much attention.

Online courses have enabled many people to realize their learning objectives.

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The city council has taken steps ---------- improving air quality by introducing measures that limit factory pollution.

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Author Sylvia Feldman  ________  for a Publishers Guild Award for her best- selling nonfiction novel, 21 Ravens.

S. Eliot received wide recognition after publishes The Waste Land, which fused poetic traditions with elements of modern music and language.

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Applicants  ______________  a form for a new license should make certain that it is completely filled out.

______there should be more control over handguns has long been a topic of debate in the United States.

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We often take part in many ..................... activities at school.

Indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

At the moment it is difficult to assess the extent of the damage that his company has caused to the environment.