12 Correct the mistakes. . You needn't run in the swimming pool. It isn't allowed.
1. He mustn't hurry. He has a lot of time.
2. Can she speaks Hungarian?
3. They were able finish their work on time.
4. He could pass his exam last week.
5. He doesn't need get up so early.
6. He was able to talk when he was two.
7. You needn't interrupt people.
8. It isn't dark. You mustn't turn on the light.
9. You don't have to draw on your desks.
10. Do I have to borrow your pen, please?
11. You mustn't wear a school uniform.
12. It's a secret. You needn't tell anyone.
13. If you want to lose weight, you don't
need to eat fatty food.
14. You mustn't go to the shop. We have
everything we need.

Найдите ошибки​

1We often do great harm to our environment Мы часто наносим вред окружающей среде
2 How can we protect it? Как мы можем защитить ее?
3 I’m sure that some of us don’t notice global problems which are taking place Я уверен, что некоторые из нас не замечают глобальные проблемы, которые сейчас имеют место
4 Has everyone heard about global warming, climate change, sea level rise, overpopulation? Слышал ли каждый о глобальном потеплении, изменении климата, увеличении уровня моря, перенаселения?
5 I think that we are more or less familiar with these issues Я думаю, что мы более или менее знакомы с этими вопросами
6 The problem is that we don’t pay enough attention to it Проблема в том, что часто мы уделяем достаточного внимания этому
7 Certainly, we need to think thoroughly about these problems Конечно, нам нужно тщательно подумать об этих проблемах
8 Let’s look at the problem of overpopulation Давайте взглянем на проблему перенаселения
9 How can we solve this problem? Как мы можем решить эту проблему?
10 We shouldn’t get married and have children, shouldn’t we? Нам не следует женить (выходить замуж) и иметь детей, не так ли?
11 Certainly not Конечно, нет
12 On the contrary, Russia has the opposite problem Наоборот, у России обратная проблема
Может

Ann is not a journalist. Is Ann a journalist?
This student doesn't have a good memory. Does this student have a good memory?
Professor Smith and Professor Black are not colleagues. Are Professor Smith and Professor Black colleagues?
They are not economists. Are they economists?
The secretary isn't in the office. Is the secretary in the office?
Bill has no questions to the lecturer. Does Bill have any question to the lecturer?
Lecture halls are not on the second floor. Are lecture halls on the second floor?
The problem is not difficult. Is the problem difficult?
We don't have lectures on Friday. Do we have lectures on Friday?
A scientist is not an expert in natural sciences. Is a scientist an expert in natural sciences?
A scholar isn't an expert in the humanities. Is a scholar an expert in the humanities?