There ............ of stars in the sky.

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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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Could you put me ___________ to customer services, please?

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The warming of the Pacific Ocean has created weather patterns (31)__________ strongly affect the world. When the water is warm, the (32)__________ of rainfall in Indonesia and the surrounding regions decreases. Australia could even experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier. This happening is called El Nino and is used by weather forecasters to make long-range weather predictions. They also know that El Nino will (33)__________ unusually heavy rains to the southwestern part of the United States and make the central part of the country drier at the same time. According to research, weather forecasters (used to know about the coming weather with certainty. Now everything has become (34)__________ different. El Nino itself used to be (35)__________ . It would occur every two to seven years. But now, this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this change on a global scale either.

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Local people in this neighborhood have been supplied with ____ for five years now

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

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Clifton was the place we went for that rainy vacation, ____?

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Many young people live a life of constant anxiety over money and job security

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 This is my first ____________ to Africa.

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Let’s go to the cinema to watch “End game”,______?

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When his mum ____, he ____ that, as well as enjoying doing it, he ____ to give something back to the Dorothy House Hospice Care

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It is desirable that the hotel manager______to call the maintenance staff every 6 months to clean up the air conditioners

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When I was young and idealistic I believed it was possible to change the world

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The old students __________ one another in the school yard

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Only after food has been dried or canned __________

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Mary wore a _______ hat on the school trip last weekend

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Everybody here loves classic music, ____? 

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Many wild animals are _______ threat ________ extinction

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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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A: _________ girls are there in your class? --- B: Four.

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The sky is getting dark. It______rain is on its way