Page 154 - Grammar For YDT - 12

Answer Key

EXERCISES – RELATIVE CLAUSES
Exercise A
1. Researchers who work at various universities in the USA published an article in scientific journals claiming that
Saturn had another large moon in the distant past.
2. We use some pills which discover the painful area of the body as a result of chemical processes to relieve the
pain in our bodies.
3. Horses, whose extraordinary ability to sleep standing up protects them against predators in the wild, have five
different sleep stages, some light and some deep.
4. The ancient city of Myndos has been unearthed on Rabbit Island, which is close to the shore.
5. 3.300 BC is an estimated year when writing was invented.
6. The reason why users choose mobile apps is to make their lives easier and find solutions to their problems.
Exercise B
1. For long-lasting friendships, it is important to find someone safe with whom you can share your thoughts and
feelings.
2. Researchers especially focused on the speed at which the brain readjusted its activity to treat unknown words.
3. Electricity is an important energy source on which we depend to run civilization.
4. China is Saudi Arabia’s main client from which it imports 70 billion dollars worth of oil per year.
5. Nannies must commit to making a positive difference in the lives of the children for whom they care.
Exercise C
1. whose
2. which
3. which
4. where
5. which
6. who
7. why
8. which /that
Exercise D
1. The Lycians were considered an important part of the maritime trade carried out on the Aegean and
Mediterranean coasts in the world of that day.
2. The olive, growing intensively in the Mediterranean basin and lives for 1,000–3,000 years, is defined as an
“immortal tree” and its oil as “liquid gold” due to its long life.
3. The platypus, having existed for about 100 million years, is an unusual animal with many features.
4. Maglev trains, travelling on rails but in the air, thanks to the electromagnetic force, are only used in China,
Japan, and South Korea today.
5. According to various sources and documents, copper was the first metal to be used in 8000–7000 BC in the
Anatolian region.
6. At the end of the day, everybody needs somewhere to rest and somebody to talk to peacefully.
7. Money is the only means to be utilised for our needs in today’s world, unlike ancient times when different items
such as sea shells, animals, and products were used.
Exercise E
1. During the Renaissance period, which began in Europe, incredible progress was made in science and
technology, and the value of human beings increased.
2. Greenland, which is the world’s largest island, is located in the coldest part of the Northern Hemisphere, in the
north polar region.
3. Thermal cameras, which detect heat in infrared wavelengths, not visible light, are used in many different areas,
such as the military, mining, and search and rescue.
4. Pozzolanic materials, such as volcanic ash which is found at the Pozzuoli site in the Bay of Naples, are thought
to be key to the durability of ancient Roman structures that are still intact.
5. Plants, which face environmental pressures like never before, are thought to be trying to adapt to climate
change based on molecular and biochemical networks in their cells.

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