Прочитайте текст, используйте глагол в правильной форме в действительном или страдательном залоге.
The discovery of DNA
DNA (1)(discover) by a German scientist in 1869, but nobody (2)(realize) the importance then. Other scientists thought that it was too simple to contain the map of how we (3)(make). In 1953, a group of British scientists finally (4)(discover) the structure of DNA and how it (5)(work).They (6)(give) the Nobel Prize for Medicine in 1962. In 1986, for the first time DNA testing (7)(use) by the police. Some DNA is usually left at the place where crime (8)(commit). The test always (9)(show) if the person is guilty. With DNA information it is possible that a cure for many diseases (10)(find) in the future.

1.2. Измените предложения, используя страдательный залог.
a)Thieves stole five cars.
b)The police will close the road.
c)Bruno Brooks presents the Top 40.

I would like to tell you about the main ecological problems in our life.They are: littering, air pollution, water pollution, endangered species, destruction of natural resources and others.
People cut down forests, pollute air and water. They don't think about their future and about future of our planet. There are many endangered species in the world. We just destroy our nature. It is very bad and we mustn't do it. We must care of our beautiful nature. We must begin from our houses, streets and towns and do them clean. People must not cut down forests, pollute air and water. They must stop killing endangered  animals. We must save our planet!

Я хотел бы рассказать вам об основных экологических проблемах в нашей жизни. Ими являются: захламление, загрязнение воздуха, загрязнение воды, уничтожение животных, находящихся под угрозой исчезновения, уничтожения природных ресурсов и другие.

Люди вырубают леса, загрязняют воздух и воду. Они не думают о своем будущем и о будущем нашей планеты. В мире много вымирающих видов животных. Мы просто уничтожаем нашу природу. Это очень плохо, и мы не должны этого делать. Мы должны заботиться о нашей прекрасной природе. Мы должны начать с наших домов, улиц и городов и сделать их чистыми. Люди не должны вырубать леса, загрязнять воздух и воду. Они должны прекратить убивать животных. Мы должны нашу планету!

(простенько, на уровень 7 класса, как просили)

I am going to tell you about my school. I have finished school number 129. My school is new and modern and it is very cosy and all the pupils like it very much, it is really home for everyone, not only who studies there but for all the stuff.It has four floors. The classrooms are light and high. There are classrooms for practically all the subjects — two rooms for English classes, History room, Physics, Mathematics, Chemistry, Geography, Literature rooms, etc.There is a computer class in our school, where pupils study computing, one of the most important subjects nowadays. There is a school hall in our school, too/It is situated on the ground floor.Meetings, conferences, concerts and all the celebrations take place there or in our assembly hall, which is situated on the first floor.Our school has two gymnasiums and a sports-ground, football field and two basketball fields. Many pupils are fond of sports and they have a good opportunity to go in for differentsports there. Also there is a swimming bath in our school. It is not too big.I am very thankful to my school and all teaching stuff. When I was only seven years old, I entered school to get some knowledge and now I know many things due to my teachers. I have already got secondary education. The teachers in my school are very kind and clever; they give all their knowledge and all their love to the pupils.There is a good tradition in our school. Every year the school leavers come here to meet their teachers and classmates. Such meetings are very touching and interesting. They take place every first Saturday of February.I'll never forget my school, my teachers and my classmates. To my thinking, it is my childhood and it is the happiest period in life. My first friends, my first love and my first achievements and disappointments are all connected with my school life.