1 the director has signed this letter. 2 They have concluded the agreement
3 They have not delivered the goods yet
4 The plane will deliver the goods today
5 Students will settle this question
6 The government has restored this building
7 We have just built a lot of houses
8 The director will check the documents
9The teacher will correct the student's composition.
10 Nurses will look after patients in hospitals.
11 I will wear old clothes at home.
12 I have used my mobile phone
13 She hasn't eaten anything since this morning.
14 She has not done any school work since Monday.
15 She has had a red nose for three days.
16 She hasn't seen her friends for a week

Надо сделать эти предложения в страдательном залоге

1 To reduce emissions of harmful substances into the atmosphere, it is necessary to install industrial filters in enterprises.  

2. It's necessary to reduce the number of environmentally hazardous vehicles and look for a replacement in the form of electric vehicles.

3. It is also necessary to restore forests on a large scale, but not to cut them down.

4. Scientists should find methods for cleaning water bodies and other water sources.

5. Waste should be recycled, not burnt (incinerated).

1 Чтобы уменьшить выбросы вредных веществ в атмосферу, необходимо устанавливать промышленные фильтры на предприятиях.  2. Сокращать количество экологически опасного транспорта и искать ему замену в виде электромобилей. 3. Следует масштабно восстанавливать леса, а не вырубать их. 4 Учёные должны найти методы по чистке водоёмов и других источников воды. 5. Отходы должны перерабатываться, а не сжигаться.

World is a huge space. I think now out planet is suffering from our own hands: we crash it down every year. You know about Global Warming? Its the result of humans' actions. We bulit alot of factories every year, and stuff like that.Firstly, we should solve world's problems like GW... we should stop using so much electricity, its not that hard to do. Just turn off the light when you don't need it. You can be sure, if 20 people do like that its gonna be much better for our planet. Every person has a chance to make our world "feel better". I think the commercial of plastic bags was an amazing variant!