Variant 1
1. Listen! That’s Julia singing. Isn’t it a song? MARVEL
2. Weathermen can’t always make the right about the weather nowadays. PREDICT
3. She opened the envelope so as if she did not want to read the letter. RELUCTANT
4. Many local shops have closed down because they lost with big supermarkets COMPETE
5. He was deeply to his old granny. ATTACH
6. Ancient Spartans were warriors. SKILL
7. It was really of you to go there alone. FOOL
8. Any time I operate any kind of something terrible happens. EQUIP
9. Her explanation of an accident was really . CONFUSE
10. Be quick. The of our train is in five minutes. DEPART
11. The of computer are unlimited. ABLE
12. In our school we have a very wide of subjects. CHOOSE
13. Your room looks rather . You should clean it. MESS
14. I’m not going to buy this bag. I think it’s expensive. EXTREME
15. We were not informed about the of the flight in advance. CANCEL

The USA produces more doughnuts than all the other countries in the world.

3) Not stated 

The fillings in doughnuts were first added to make them well-cooked.

2) True 

Mrs. Gregory was the best doughnut cook in her town? 

3) Not stated

Mrs. Gregory invented doughnuts with a hole in the centre.

2) False

At the beginning of the 20th century, doughnuts became very popular in the United States.

3) Not stated

The doughnut machine brought its inventor lots of money.

1) True

The spelling ‘donut’ is more popular in the US than anywhere else.

1) True   

The ‘Doughnut Girls’ was the name for women who served in the army during World War I.

 2) False

Air pollution is a very serious problem in many countries. It is caused by two main factors: the growth of industries and the increase of traffic on the roads of cities and towns. 
Production lines at factories and plants produce a lot of harmful gases that are discharged into the atmosphere. And the growing number of cars and trucks (lorries) in the cities also adds to the contamination of the air in urban areas.
As a result, people begin to suffer from lung disorders that may eventually cause lung cancer and other serious health problems.

What can people do to lessen the negative impact of air pollution on their health? First of all, people should make sure that industrial facilities comply with environmental laws and regulations. All factories and plants should have reliable scrubbers (filters) to prevent poisonous gases from getting into the atmosphere.
And people should try to decrease the number of cars on their roads by using public transport more. They can also help to solve the air pollution problem by planting more trees and shrubs within their cities and towns.