1. What can cause polluted air? 2. What can people do to help the environment ? 3. Who can find the ways to reduce pollution? 4. Which organizations try to stop environmental disaster? 5. What people should do with their cars to make our planet cleaner?

1. when are they doing their homework?

2. who is our new teacher?

3. where is the car?

4. which blouse do you like?

5. how is your mom feeling?

6. what book is it?

7. when your sister phones her boyfriend?

8. how long she talked to him?

9. how many cars do your parents have?

10. when are they coming to visit?

11. when is he going to work?

12. who is your brother?

13. why don't you get up early?

14. how often do you have an english lesson?

15. what kind of songs are they singigng?

16. whose book is this?

17. how do they usually go to work?

Объяснение:

Tverskaya is the main street of Moscow, and this is where I live. The first sidewalks appeared here, the first horse-drawn tram was launched, and the electrification of street lamps began from Tverskaya. There are many cars, cafes, restaurants and, of course, people everywhere. There are also many bus stops and shops: a flower shop, a grocery store and a small supermarket. We can see many interesting places, and one of them is the Hotel Dresden. Surgeon Nikolai Pirogov, writers Ivan Turgenev, Nikolai Nekrasov, Alexander Ostrovsky, Anton Chekhov have repeatedly stayed here. The street itself is long and wide. And in spring this street is especially beautiful, because of the flowering trees and many flowers.