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Because aluminum is lighter and cheaper ............., it is frequently used for high-tension power transmission.

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Half the town washed ______________ during the floods

I often go to school ….bus.

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 _________? - From Vietnam.

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Urbanisation programmes are being carried out in many parts of the world, especially in densely (26) _____ regions with limited land and resources. It is the natural outcome of economic development and industrialisation. It has brought a lot of benefits to our society. However, it also (27) _____ various problems for local authorities and town planners in the process of maintaining sustainable urbanization, especially in developing countries. When too many people cram into a small area, urban infrastructure can't be effective. There will be a (28) _____ of livable housing, energy and water supply. This will create overcrowded urban districts with no proper facilities. Currently, fast urbanization is taking place predominantly in developing countries where sustainable urbanization has little relevance to people's lives. Their houses are just shabby slums with poor sanitation. Their children only manage to get basic education. Hence, the struggle for (29) _____ is their first priority rather than anything else. Only when the quality of their existence is improved, can they seek (30) _____ other high values in their life

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------- our factory is to maintain its relationships with our retailers, we must increase production

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He spent all his money through………

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Mobile phones emit microwave radio emissions. Investigators are questioning whether exposure to these radio waves might (39) _____ to brain cancer. So far, the figures are not final. The precise evidence does not enable us to say in certain that mobile phones are definitely safe. On the other hand, recent research has not yet (40) _____ clear adverse effect associated with the prolonged use of mobile phones. Many studies are now going (41) _____ in numerous countries. Some of the results are contradictory but the others have shown an association between mobile phone use and cancer. However, these studies are preliminary and the issue need further, long – term investigation. (42) _____ the scientific data is more definite, it is advisable for people to try not to use mobile phone for long periods of time. Don’t think that hands free phones are any safer either. At the moment, research is in fact showing the opposite and they may be just as hazardous. It is also thought that young people (43) _____ bodies are still growing may be at particular risk

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Don’t forget to bring a ________. It will keep you warm when you sleep at the campsite

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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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The soldier ...... the sniper’s arm ........

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Over the past 50 years, near-surface air temperatures across Alaska and the Arctic ____ at a rate more than twice as fast as the global average

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The best travel books of this year fall into three main categories: _________ informational, narrative, and anecdotal

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My mother can dance very .............. She is a professional dancer.

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It’s a rare piece of jewelry, but I wouldn’t like to put a _______________ on it.

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With many customers waiting for more affordable computers, Simon Tech is ------- to release its latest model

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I usually ____ my younger sisters when my parents are away on business

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We are so thankful for all the support we received

Choose the best option (A, B, c or D) to complete these sentences.

Where are you, Hai? - I’m downstairs. I ..................... to music.

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In front of the house. He wants it to have a nice ________

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Since Ms. Cordell had extensive ------- experience in sales, she was chosen to lead the merger preparation team