2. Sitting
3. Raising
4.Touching
5. Standing
6. Jumping
An airplane or aeroplane (informally plane) is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine or propeller. Airplanes come in a variety of sizes, shapes, and wing configurations. The broad spectrum of uses for airplanes includes recreation, transportation of goods and people, military, and research. Commercial aviation is a massive industry involving the flying of tens of thousands of passengers daily on airliners. Most airplanes are flown by a pilot on board the aircraft, but some are designed to be remotely or computer-controlled.
The Wright brothers invented and flew the first airplane in 1903, recognized as "the first sustained and controlled heavier-than-air powered flight".[1] They built on the works of George Cayley dating from 1799, when he set forth the concept of the modern airplane (and later built and flew models and successful passenger-carrying gliders).[2] Between 1867 and 1896, the German pioneer of human aviation Otto Lilienthal also studied heavier-than-air flight. Following its limited use in World War I, aircraft technology continued to develop. Airplanes had a presence in all the major battles of World War II. The first jet aircraft was the German Heinkel He 178 in 1939. The first jet airliner, the de Havilland Comet, was introduced in 1952. The Boeing 707, the first widely successful commercial jet, was in commercial service for more than 50 years, from 1958 to at least 2013.
1. They have built a new house. Have you seen it?
2. Have you shown your picture to mom? - No, it is not ready yet.
3. I have seen this fim. What about you? - Yes. The film is interesting.
4. Have you been to the London Zoo? - Yes, I have.
5. Dad has just come back from the sea.
6. Take these magazines. I have read them already.
7. Have you ever been to Greece? - Yes, it's a very beautiful country.
8. We haven't made an experiment yet.
9. She has never translated such difficult articles fo him.
10. I have rang him three times today.
11. He has left for New York today.
12. Have you seen the director today? - No, I haven't.
Leaves broadly oval or round, the shape of the edge waviness vary depending on the variety. Different varieties of the diameter of the outlet can vary from 7 to 40 cm and more. Pentamerous flowers simple or double, of various colors, clustered on stalks 2-7 pieces.
<span>Violet is the first in the world among houseplants. Flowers are the most perfect creations of nature. The violet, symbolizing the arrival of spring, revival of nature, favorite flower in many Nations. These delicate little flowers are full of grace, unearthly beauty and perfection. Violet blooms nine months of the year, regardless of the time of year, without causing allergic reactions. Absolutely not capricious, does not require bright lighting, good land, large pots. The smell of violets has a great effect simultaneously on the body, intellect and soul, setting up on an optimistic note, relieving tension, enhancing the body's defenses, helps insomnia</span>
1. foggier
2. worst
3.better
4. smaller
5. most wonderful