Summative Practice Units 1-4 3 Choose the correct forms. 1 How many books have you borrowed / have you been borrowing from the library this year? 2 How long have you been reading / have you read this novel? 3 Imet/ was meeting him when I was working/ worked abroad. 4 When I got / had got home, I discovered I had lost / lost my keys. 5 By the time he was thirty, he had already become / already became the manager of the company. 6 The teacher asked the students to finish to write / writing. 7 I can't find my glasses. I might have left / might leave them in the library. 8 We used to be / would be friends, but we quarrelled two years ago. I haven't seen / haven't been seeing him since / for then. 100 with the correct form of the

Nowadays, the place we live is in great danger. There are a lot of things, which affect the Earth. Factories waste and exhaust gases, deforestation, poisoning of the air and water pollution, destruction of the ozone layer and global warming – these are the problems which a modern human should face. The main question is what is needed to be done to make the things better? Is it possible to change the current situation somehow?I think, there are some steps that could help people to improve the things. The first that we are able to do is to change the way of life. In my opinion, we should begin with something very simple. For example, start using public transport instead of our cars, we can use glass and wood instead of plastic, it will be effective if the people organize planting of the trees and renovation of the parks.As you can understand, many serious problems exist and these solutions can be ineffective. The main task is to save the planet which is going to be destroyed. We understand, that there is no opportunity to renew the nature completely, but it is possible to make some improvements. If people realize the size of the problem and all the possible consequences, there will be an encouragement for them to take some measures.

1 I think she is _the most famous singer in the world.  - a)

2 What is _the biggest country in the world.  - a)

3 We cycled a long way today. I felt …more tired than the last time. - a)

4 We won the dance competition. We were …better than the others. - c)

5 What is the _most expensive food in the world?  - b)

6 I think English is _easier than maths.  - b)

Объяснение:

1. Я думаю, что она _ самая известная певица в мире.

2. Что такое _ самая большая страна в мире.

3. Сегодня мы проделали долгий путь на велосипеде. Я чувствовал себя... более усталым, чем в раз.

4. Мы выиграли танцевальный конкурс. Мы были... лучше, чем другие.

5. Какая самая дорогая еда в мире?

6. Я думаю, что английский легче, чем математика.