Everyone must know that he/she has to do his or her part of chores. 2 Doing shopping is not a household duty.
3 The elder sister is usually the greatest helping hand for
mother.
4 We usually boil sausages in a frying pan.
5 We usually fry in kettles.
6 We need a kettle and a teapot to make tea.
7 His father is good at making coffee.
8 His elder sister never drinks coffee.
9 After breakfast father washes up with a dishwasher.
10 Mother cleans the table after breakfast.
11 The elder sister stays at home and does lots of things about
the house.​

1.biological science studies all living organisms that inhabit our planet
2.even in the most remote times, people have tried to understand the world around them, and had a rather extensive knowledge about plants and animals
3.Modern biology has started to develop in the XVII century.
4. The microscope invented by Leeuwenhoek, allowed scientists
discover the world of microorganisms.
5. In the XVIII century, Carl Linnaeus laid the foundations of modern
classification of living things.
6. The laws of heredity and the principle of natural selection were
formulated in the XIX century.
7. In our day human knowledge in the field of biology grow very
quickly thanks to computer technology.

1. In these days there are so many biological
disciplines, that one person can not learn them all.
2. Students should learn the basics of the four main sections
Biology: zoology, botany, molecular biology, and genetics.
3. Genetics studies the laws of heredity and how to live
They are adapted to environmental conditions.
4. Graduates of biological faculties granted
many opportunities for career growth.
5. Medicine need talented scientists, which could lead
in gene therapy research fields, viral infections, etc..
6. Humanity is going through a period of climate change, and
the task of scientists - to predict the consequences of these processes.
7. Ecology studies the environment and the way in which
plants, animals and humans exist together and influence each other.

We decided to have a special celebration of Mother's Day. We thought it a fine idea. It made us realise how much Mother had done for us for years, and all the efforts and sacrifices that she had made for our sake. 
So we decided that we'd make it a great day, a holiday for all the family, and do everything we could to make Mother happy. Father decided to take a holiday from his office, so as to help in celebrating the day, and my sister Ann and I stayed home from college classes, and Mary and my brother Will stayed home from High School. 
It was our plan to make it a day just like Christmas or any big holiday, and so we decided to decorate the house with flowers. We asked Mother to do it, because she always does it. 
The two girls thought it would be a nice thing to dress in our best for such a big occasion, and so they both got new hats. Father had bought silk ties for himself and us boys. We were going to get Mother a new hat too, but it turned out that she liked her old hat better than a new one. 
After breakfast we decided that we would hire a motor car and take Mother for a beautiful drive away into the country. But on the very morning of the day we changed the plan a little bit. We all felt that it would be nicer to have a definite purpose. It turned out that Father had just got a new rod the day before, and he said that Mother could use it if she wanted to: in fact, he said it was practically for her, only Mother said she would rather watch him fish than fish herself. 
So we got everything arranged for the trip. Mother cut up some sandwiches and packed all up in a basket for us. 
When the car came to the door, it turned out that we couldn't all get in. Father said that he could stay at home and work in the garden. The girls said that Mother had only to say the word and they’d gladly stay t home and work. 
In the end it was decided that Mother would stay at home and have a lovely restful day round the house. It turned out anyway that Mother didn't care for fishing and also it was just a little bit cold and fresh out-of-doors, though it was lovely and sunny, and Father was afraid that Mother might take cold if she came. 
We had the loveliest day. Father and the boys fished, the girls met quite a lot of people. We all had a splendid time. 
It was quite late when we got back. We sat down to dinner. It was grand. When it was over all of us wanted to help clear the things up and wash the dishes, only Mother said that she would really much rather do it. 
When we all kissed Mother before going to bed, she said it had been the most wonderful day in her life and I think there were tears in her eyes.