Choose the best answer:
Do you know that the ____ letter can also work as a formal document?

Choose the best answer:
Only by working three jobs _____ able to support his large family

Choose the best answer:
I saw you on the bus yesterday. Where ____ you ____?

Choose the best answer:
The invention of the mobile phone has undoubtedly revolutionized the way people communicate and influenced every aspect of our lives. The issue is whether this technological innovation has (25) _____ more harm than good. In order to answer the question, we must first turn to the types of consumers. Presumably, most parents (26) _____ are always worrying about their children’s safety buy mobile phones for them to track their whereabouts. We can also assume that most teenagers want mobile phones to avoid missing out on social contact. In this context, the advantages are clear. (27) _____, we cannot deny the fact that text messages have been used by bullies to intimidate fellow students. There is also (28) _____ evidence that texting has affected literacy skills. The widespread use of mobile phone has, out of question, affected adult consumers too. What employee, on the way home from work, would be reluctant to answer a call from their boss? Apparently, only 18% of us, according to a survey, are willing to switch off our mobile phones once we've left the office. Admittedly, mobile phones can be intrusive but there are obvious benefits to possessing one. Personally speaking, they are invaluable when it comes to making social or business arrangements at short (29) _____. They also provide their owners with a sense of security in emergency situations

Choose the best answer:
Twenty-first century technologies could offer lifestyles that are ____ benign

Choose the best answer:
_______ the person is, the more privilege he enjoys.

Choose the best answer:
Anna: "Hi, I wonder if you could help me.”
                  - Tom: “ _______ ”

Choose the best answer:
Passengers often complain about cancelled and overcrowded coaches and the lack of services

Choose the best answer:
She's been getting __________ yoga recently - she does three classes a week

Choose the best answer:
My older sister, now 35, is never satisfied _______ what she has achieved

Choose the best answer:
Although some societies are _______ undeveloped, their languages - from a linguist's point of view - are very complex.

Choose the best answer:
There are two main reasons for learning throughout life: for personal development and for professional development. These reasons may not necessarily be distinct as personal development can improve your employment opportunities and professional development can enable personal growth.

Choose the best answer:
The crowd were carried ___________ by his passionate speech

Choose the best answer:
You must be depressed when seeing this scene,______?

Choose the best answer:
It will ....... that she has covertly donated considerable sums to the IRA

Choose the best answer:
IPF has installed more than 60 air _______ devices in campus buildings and 238 in campus elevators.

Choose the best answer:
The policeman stopped my car because the engine ____ heavy smoke

Choose the best answer:
Their close friendship ____ a romantic relationship

Choose the best answer:
The skirt does ....... at the back.

Choose the best answer:
Although I like the appearance of the house, what really made me decide to buy it was the beautiful ____ from the window

Choose the best answer:
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