<span>11. They went to St. Petersburg in summer.
Where did they go in summer?
When did they go to </span>St. Petersburg<span>?
Who </span>went to St. Petersburg in summer<span>?
12. I'll listen to rock music at home.
Who will</span> listen to rock music at home<span>?
Where wi</span>ll you listen to rock music<span>?
What kind of music will you listen to?
13. Mary is going to learn English.
Who </span>is going to learn English?
What language is she going to learn<span>?
14. Sam and his girlfriend have come to stay with us this weekend.
Who </span>has come to stay with us this weekend<span>?
Where have </span>Sam and his girlfriend come to stay<span>?
15. There were five students in the class.
Where </span>were there five students<span>?
How many students were there in the class?
16. It usually takes me five minutes to get to the college.
How long does it take you to get to the college?
17. My father is forty-seven years old.
Who </span>is forty-seven years old<span>?
How old is your father?
18. This magazine costs fifteen rubles.
How much does t</span>his magazine cost<span>?
What </span>costs fifteen rubles<span>?
What kind of magazine costs</span> fifteen rubles<span>?
19. They collected stamps.
What did they collect?
Who </span>collected stamps<span>?
20. We have been friends with Vlad for quite a long time.
How long </span>have you been friends with Vlad<span>?
21. It is raining.
Is it raining?
22. She likes cooking.
Does she like cooking?
23. He has taken a few pictures.
Has he taken a few pics?
24. They don't know English.
Do they know English?
25. We didn't go to a disco yesterday.
Did you go to the disco yesterday?
26. She was my great friend.
Was she your great friend?
27. Mike collected posters last year.
Did Mike collect posters last year?</span>
1. Sail, 2. Go, 3. Take, 4. Drive, 5. Ride.
Sue ride her scooter.Clara work on the computer.Andy talk on the phone.Sam listen to music.Matt read a book.
Dear John,
I think air pollution is the most dangerous ecological problem. Air pollution affects people, nature and animals. To my mind, some small but important everyday actions can protect our nature. For example, you may plant trees as much as possible. Trees provide oxygen and clean the air. Also you can reduce waste by recycling it. As for me, I usually try to buy recyclable paper and sustainable products to protect forest. It is better to use a bicycle instead of taking out a car every time, so you'll reduce greenhouse gas emissions. It is really important to take participation in voluntary projects that protect nature. Have you ever participated in such project?
Best wishes,
Alex
Ex1. 1.printed 2.will received 3.was discussed