We use a coordinating conjunction in compound sentences to:

To separate each pair of the independent clauses

To join each pair of the independent clauses into a compound sentence

To explain the meaning of the sentence

To create a new sentence

1) I have a cat and .a..dog.The cat is grey The dog is black.

2) Daniel Defoe was .a.. famous writer.

3) Moscow is the capital of Russia .

4) Volga is .the..longest river in ...Russian Federation .

5)...Westminster Abbey is famous for coronations .

6) I am .a.pupil . My friends are ... pupils too .

7) Have you ever been to ... Tretyakov Gallery?

8) ...Trafalgar Square is in the center of ...London .

9)...Tverskaya Street is the main street in ...Moscow 

10)Would you like .an..apple ?Yes , please . I like apples very much

1. If the weather weren’t rainy on Sunday, we would go to the forest. - 2
2. We would have organized the competition better if you had told us about it a month before. - 3
3. These plants won’t grow if you don’t water them. - 1
4. He wouldn’t have passed his exam last week if he hadn’t studied hard. - 3
1. Если бы погода не была дождливой в воскресенье, мы бы отправлялись в лес.
2. Мы бы организовали конкурс лучше, если бы вы сказали нам об этом за месяц до него.
3. Эти растения не будут расти, если ты не будешь поливать их.
4. Он бы не сдал экзамен на неделе, если бы он не готовился усердно.