2 Read the text again and answer the questions. 1 Which languages does a lot of scientific language come from? 2 How is the formation of plurals different in scientific writing?
3 What are the characteristics of scientific texts? 4 What is the writer's attitude towards learning technical vocabulary?

A)          if the weather is fine and warm i will go for a walk with my friends. b)          if the weather is cold and windy i will stay at home and play computer games. c)          if the weather is rainy i will visit my friend and watch tv with him. d)        if i don’t like the weather i will read an interesting book or play chess with my father.

1 a

2 an

3 a

4 an

5 a

1. last week i met my friend. he was with a young girl.the girl was a student of our academy.2. this is a pencil. the pencil is red. 3. she is a teacher. she is our teacher of english. 4. it is a lake. the lake is deep. it is one of the deepest lakes in the world.  5. there are many flowers in your garden. the flowers are beautiful. 6. did you write the plan? give me please your plan. 7. the black sea is in the south of russia. 8. this is nick. he is an engineer. he is a good engineer. 9. there are some schools in our street. the schools are new.10. yury gagarin was the first cosmonaut of the world. 11. in summer the sky is blue and the sun shines brightly. 12. the petrovs are very friendly. 13. this is ann`s book. 14. winter begins in december. 15. what a fine day it is today! 16. history and computer science were my favourite subjects at school. 17. i don`t know the way to the station. 18. he is an engineer by profession. 19. usually i get up at 7 o`clock in the morning. 20. will you have a cup of tea? 21. warsaw is the capital of poland. 22. this is  a book. the book is very interesting. 23. do you see the sun in the sky today? 25. i went to but they were not at home.

1. it is cold today. 2. it is snowing all day long. 3. it is morning now. 4. it was very nice to get acquainted with your friend. 5. it is late. it is time to go to sleep. 6. is it funny? 7. it is 10 am already. 8. is it cold outside? 9. it is the beginning of spring but it is warm already. 10. is it far from here?

mary used to eat junk food when she was a child but now she keeps fit and prefers healthy food.

10 years ago people used to pay only in cash, but today most people have credit cards.

seven years ago i used to have a motorbike, but now it belongs to my sister as i drive a car.

when he lived in paris, he used to eat frogs every weekend, but now he lives in india and he eats indian food every second day.

when her granddaughter was a kid she used to believe that snow was made of ice cream.