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Put in the verb in a correct form


Use the words in brackets to complete the sentences.

Degrees of comparison

Test 3

Countable and uncountable nouns

Put in proper forms of the words in brackets, add much, many, few, little if necessary.

1. Temperate grasslands, which average between 25 and 75 centimeters of rain per year, have …… ( short) grasses, then south ones, sometimes just …… ( millimeter).

2. There are grazing animals like …..(gazelle) and ….. (deer); burrowing animals such as ….. (mouse) and ….. ( rabbit); and predators such as ….. (snake) and …… (coyote).

3. Much of the North American prairielands have been converted into one of the richest agricultural regions on Earth.

4. The ….. ( plant) and ……(animal) that live in the harsh conditions of the tundra are essentially clinging to life.

5. Cities make …..( sense) for humans.

6. The heart pumps ….. (blood) through the body.

7. I`m sure you`ll get the job. You have ….. (experience).

8. I need your ….. (advice).

9. To observe birds you need ….. (patience).

10. There is….. (time).



1. …..( large) hot desert in the world, northern Africa's Sahara, reaches temperatures of up to 50 degrees Celsius during the day

2. These areas exist under a moisture deficit, which means they can frequently lose ….. (much) moisture through evaporation than they receive from annual precipitation.

3. Deserts cover ….. (much) than one fifth of the Earth's land, and they are found on every continent.

4. A place that receives ….. (little) than 25 centimeters of rain per year is considered a desert

5. ….. ( dry) deserts get ….. (little) than one centimeter of precipitation each year, and that is from condensed fog not rain.

6. ….. (much) desert birds are nomadic, crisscrossing the skies in search of food

7. ……(High) temperatures may produce an increasing number of wildfires that alter desert landscapes by eliminating slow-growing trees and shrubs and replacing them with fast-growing grasses.

8. Tundras are among Earth's ….. (cold), ….. ( harsh) biomes

9. This allows the government and others to provide more service such as water, electricity, and transportation to a ….. (large) number of people.

10. Schools and shops in cities are ….. (much) easily accessible than in rural areas.


1. There ….. (be) no life without water.

2. If I ….. (have) this book, I …… (give) it to you.

3. If I ….. (have) time, I ….. ( complete) the experiment.

4. The weather was freezing. I wish it ….. (be) warmer.

5. Unless computer techniques ……. ( develop), space research ….. never (make) such great progress.

6. Do you wish you ….. ( study) art instead of science?

7. Even if we ….. (stop) emitting greenhouse gases (GHGs) today, the Earth still …..(warm) by another degree Fahrenheit or so.

8. Depending on our choices, scientists predict that the Earth ….. eventually (warm) by as little as 2.5 degrees or as much as 10 degrees Fahrenheit.

9. A commonly cited goal is to stabilize GHG concentrations around 450-550 parts per million. This is the point at which many believe the most damaging impacts of climate change ….. ( be) avoided.

10. According to the IPCC, we ….. ( have to) reduce GHG emissions by 50% to 80% of what they're on track to be in the next century to reach this level.


3.Infinitive\-ing forms

Put in the verb in a correct form.

1. . A lysogenic bacterial culture can be treated with radiation or mutagens, ….. (induce) the cells ….. ( begin) producing viruses and lyse.

2. Highly voracious predators, salamanders emerge from their burrows at night ….. ( feed) on worms, insects, frogs, and even other salamanders.

3. During the day these insects move little and are nearly impossible to distinguish from the background they imitate, and that, of course, is the point: ….. ( remain) invisible to sharp-eyed predators that use vision ….. ( hunt).

4. …… ( Specialize) in zooarchaeology, the scientist has helped ….. (launch) a new line of research.

5. After….. ( take) precise measurements, ….. (peer) beneath linen bandages with x-rays, and ….. (cataloge) her findings, she created a gallery for the collection—a bridge between people today and those of long ago

6. A virus infects a bacterial cell by …..(attach) to the bacterial cell wall by its tail.

7. In coliphages the tail is a complex protein structure …..( consist) of a hollow contractile sheath, with a plate at the base that contains long protein fibers.

8. Every human alive today shares one common ancestor ….. (arise) from Africa between fifty thousand and two hundred thousand years ago.

9. Over time, different groups of people, or haplogroups, made a decision …… ( embark) on an epic journey to find new places to live.

10. Grasslands in the southern hemisphere tend ….. ( get) more precipitation than those in the northern hemisphere.


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