Page 50 - Dersler Cepte - English 12

Exercises - Tenses

A) Fill in the blanks with the Present Simple or Present Continuous forms of the verbs in brackets.
Everyone is exposed to electromagnetic fields (EMFs) to varying degrees in daily life. Everything that 1. __________________
(utilise) electricity generates EMFs. Some examples of these fields 2. __________________ (include) those created by radio
transmitters, cell phones, and kitchen appliances. However, currently, scientists 3. __________________ (debate) the effects of
electromagnetic fields on the likelihood of developing health problems. While some of them 4. __________________ (express)
concern about severe health problems and 5. __________________ (dispute) the safety of EMF exposure, the majority of experts
6. __________________ (not believe) that most EMFs are harmful. They 7. __________________ (claim) that not enough study
has been conducted to determine whether EMFs 8. __________________ (be) safe as most research 9. __________________
(employ) animal or cell models, which cannot be applied to human health confidently.
On the other hand, some studies 10. __________________ (provide) tentative support for electromagnetic field symptoms such
as sleep disorders, headache, depression, drowsiness and weariness, and insufficient concentration. It 11. __________________
(seem) that the discussions will go on in the future, too. The best option is to be aware of EMFs and limit exposure. This
topic of study 12. __________________ (develop) and will undoubtedly expand as long as wireless gadgets and labour-saving
equipment 13. __________________ (become) more prevalent. Keep an eye on the news for developments in science.

B) Choose the correct option.
1. Both the current and future generations deserve / are deserving a world free of pollution.
2. During adolescence, children are needing / need adequate sleep and nutrition more than ever for a healthy development.
3. Businesspeople think / are thinking of investing in this country more than the other countries in the region because of its
promising future.
4. Frequently, cyberattacks are involving / involve the collection of information for fraud or political reasons.
5. Due to the development of mobile phone technologies, how their businesses will appear on mobile devices concerns / are
concerning companies more than on a website.
6. Babies are tasting / taste everything to understand the world in the first two years of their life, which is called the oral stage.
7. Scientists are currently weighing / currently weigh whether Sacculina, a type of parasitic organism, could be used to
benefit certain marine ecosystems.
8. After losing a large amount of weight, many people with diabetes say they feel / are feeling much more comfortable in their
new bodies.
9. Thanks to the advancements in educational technologies, today’s youth is becoming / becomes cleverer.
10. Authorised institutions and organisations see / are seeing environmental problems differently than in the past.

C) Fill in the blanks with the Present Perfect or Present Perfect Continuous forms of the verbs in the box.
search go on not yet produce discover announce release increase refuse
1. Despite the importance of solar and wind power for the environment, scientists _______________ batteries that can store the
energy obtained from these sources for a long time.

2. Recently, World Health Organisation _______________ a report indicating that the climate crisis would cause viruses to
spread rapidly and extensively more than expected.
3. Scientists from Oxford University _______________ that they have developed a malaria vaccine with “revolutionary” potential.
4. Perseverance, the Mars rover, _______________ the planet for traces of life and habitability since 2020.
5. Norwegian people _______________ to join the European Union twice by referendum.

6. The podcast format, which brings a new breath to broadcasting, _______________ its popularity in many countries day by
day since the very first day it came out.
7. The excavations of the ancient city of Assos _______________ without a break for the past 42 years, even though they take
place throughout the entire year.

8. Nobel laureate Turkish scientist Prof. Dr. Aziz Sancar _______________ that a molecule called EdU, often used in laboratory
experiments, can be used especially in treating brain cancer.

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