Complete the sentences.choose the correct adjective form. таблица l | longer/the longest higher/ the highest bigger/the biggest | | | 1. the nile is the _longest_ river in the world. 2.everest is mountain in the world. 3. the sahara is desert in the world. 4. an ocean is than a sea. 5. mountains in asia are than in europe. 6. the volga is than the svisloch.

2 the highest
3 the biggest
4 bigger
5 higher
6 longer

Перед существительным во множественном числе неопределенный артикль в английском языке не употребляется никогда, зато определенный неизменяем независимо от количества существительных. Отсюда два вывода:
1) если в тексте встречаются существительные во множественном числе без артикля, значит в единственном каждое из них фигурировало бы с неопределенным артиклем;
2) наличие артикля the перед существительными во множественном числе является признаком того, что собеседнику или читателю эти существительные должны быть известны.

1) By this time next year you will have graduated from the University.
2) All last week he was preparing for the examinations.
3) That man has been teaching at the University since 1985.
4) Water changes into ice when the tempreture drops below zero.
5) Kindly repeat what you have just said.
6) I only succeed in solving the problem after I have been working on it for several hours.
7) He reminded me that we had been classmates at school.
8) I heard that you had given up the idea of learning English.
9) By the time he is thirty he will have become a good engineer.
10) My friend  went to Moscow last summer and he had been working there since then.
11) When I get back they probably will be working at the computer.
12) When I go to the library the next day I will find the book exactly where I have left it.