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Xoan singing is a vocal art of villages in the ancestral land of Phu Tho. It has been ____ for generations and the oral tradition is still very much alive today

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Mary wrote a letter of ____ to Microsoft yesterday after seeing their advertisement in the morning

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The supermarket chain has promised to cut ___________ on packaging

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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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Where ________ gone?

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I wish you’d make an effort ______________ get on with her

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The rear sections of the rocket .........

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Would you hurry __________ already? I'd like to get to the concert before it's over

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Your music is very ____. Can't you just stop it?

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You can’t tell the difference between them; he _______ his mother

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It never stops raining here. I wish it______raining

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Here, I noted __________ some ideas for you

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There is always something to be cut __________ young trees if they are to grow well

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___ does your father work? At City Hall

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The burglars disabled the alarm and used a glass cutter to ....... the house

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Police have told me that searching for my missing cat will be like _______

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Winds up here reach 80 miles an hour; the tin, the roofs, they ..... every now and then

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We need to go ____________ every inch of this house to find my engagement ring!

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Hardly ______ of the paintings at the gallery were for sale

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Half of Martha's class has gone________________ flu

Choose the best answer to complete the senten. There.................two rooms in my house.