4 Read the pairs of sentences and explain the difference in meaning. 1 a He's written a book. b He's been writing a book. 2 a Who's eaten my chocolates? b Who's been eating my chocolates? 3 a She's never been to a wedding before. b She'd never been to a wedding before. 4 a I've tried to call her. b I've been trying to call. 5 a They'd been married for thirty-five years! b They've been married for thirty-five years! 10

1) In my opinion, animals should not work. I consider all animals to be as free and intelligent creatures as humans. People treat them terribly in any field of work. In the circus and the zoo, animals are beaten, not adequately fed and kept in captivity. Technological progress does not stand still. For example, instead of horses, you can move around by car, bicycle, train, etc. We must refuse to use animals in work.

2) My favorite animal is a dog. They are very smart and knowingly say that the dog is a friend of man. There are a lot of dog breeds and each dog has its own character, so everyone can find a four-legged friend.

3) Humans are not the only smart creatures on the planet. Thinking and logic allows animals to survive. I think that now elephants and other smart animals are used only as toys in a circus.

Номер 2

1) If they have enough money, they will open a restaurant next year.

2) I do not talk to you  anymore if you will insult me

3) If he practises every day, he will become a champion.

4) If John does not keep his word, Jane will be angry with him.

5) She helps us if we will ask

Номер 3

1) We will buy this car if you give us a discount

2) If my dad finds his tools, he will be able to repair my bike.

3) nn will meet her wfriends from Italy if she comes to the party

4) If you don't   help me, I won't pass the exam tomorrow.

5) If Dan doesen't give up smoking/ Lynn won't marry him

Номер 4

1) If you don't eat now, you will be hungry later.

2) She will be sad if he leaves

3) If you leave ice in the sun, it will melt

4) If we go to the show, we will have a lot of fun.

5) If you mix black and white, you will get grey.

Номер 5

1) it / rain tomorrow /we not /go to the park -

If it rain tomorrow, we won't go to the park

2) you / heat the water/ it/ boil. -

If you heat the water, it will boil

3) water/ freeze/ it/ turn to ice -

If water freezes, it will turn to ice

4) I / need your help/ I/ phone you -

If I need your help, I will phone you

5) we / pay for dinner/ you pay for lunch -

If we pay for dinner, you will pay for lunch