Перепиши предложения в пассивном залоге.
Someone must warn them about the danger. - They ... about the danger.
We have to fix the roof as soon as possible. - The roof ... as soon as possible.

Do we need exams? Of course, yes! The exam tests how we have mastered the material, how we do sums, how we have learned to write essays, if we know the basic historical dates, how we have learned to live safely, if we know the continents and the continents and etc. What are  the test exams? In my opinion,  it’s a waste of time. Sometimes someone just gets lucky, and he answers correctly. And sometimes he is out of luck. Tests may be solved without straining, just random. And it is bad, of course. I think the exam should not be a test. However, many smart people cannot pass their exams. Why? There are many reasons, and they are different. Often a person is formed only in the area where he is famous, and he knows everything about this science. Thus, the smartest physicists may not know the foreign languages ​​or poorly verse in literature. And vice versa. Sometimes a person is smart, but it does not mean that he is educated. These are different things. As for the exams, I prefer to take exams orally, because I have more opportunities to show my knowledge, looking into the eyes of my teacher- examinator.

Нужны ли нам экзамены? Конечно, да! Экзамены проверяют как мы освоили материал, что мы умеем решать, как мы научились писать сочинения, знаем ли мы основные исторические даты, научились ли мы жить безопасно, знаем ли мы материки и континенты и так далее.  Что такое тестовые экзамены? По-моему, это пустая трата времена. Иногда мне просто везет, и я отвечаю правильно. А иногда не везет. Тесты можно решать не напрягаясь, просто наугад. И это плохо. Мне кажется, экзамены не должны быть тестовыми. Однако, многие умные люди не могут сдать экзамены. Почему? Причин очень много и они разные. Часто человек образован только в той области, в которой он знаменит и знает всё. Так, умнейшие физики могут совсем не знать иностранных языков или плохо разбираются в литературе. И наоборот. Человек бывает умным, но это не значит, что он образованный. Это разные вещи. Что касается экзаменов, я предпочитаю сдавать экзамены устно, потому что у меня больше возможностей показать свои знания, глядя в глаза учителю-экзаменатору.

A. When Peter was a child, he had two drawing books. One ofthem was larger than the other. His elder brother bought the largest one for him. Peter liked it better because the drawings in it were large and simple. He drew something every day. Each newday his drawing was better than the one he had made the day before.The last page was much better than the first one.
B. After graduating from the institute Mike went to Siberia to asmall industrial town. It was difficult for him to begin his work asan engineer than he thought that it would be. He moved to more important city than the first one. He was not more successful there than before,however, and sometimes he was even unhappy. However, he was happy about one thing, he was becoming a useful specialist.
С New York is the largest city in the US. Perhaps, with all its suburbs (пригород), it is the largest city in the world. It is one of 33 the most important industrial cities in the country. Some of the oldest and historic buildings are there. Some of the buildings in New YorkCity are the highest  buildings in the whole world. New York City is not only the largest city in the US; it is also the most important industrial center. Perhaps, the most expensive office buildings in the worldare there. It has the greatest number of factories, the largest banksand post offices. It sends out many letters and receives the  most heavy mail bags. It is truly the most important business city.