Rewrite the sentences in the passive. 1 They have asked older people to stay in because of the smog. 2 Volunteers check on the turtle eggs every day. 3 Solar power will produce 50% of the country's electricity. 4 We can use this new method to clean water. 5 Infected birds are spreading the disease. 6 The charity was asking us to volunteer. 7 Visitors must not feed the birds. 8 They emptied the flooded houses with pumps.

     Belka and Strelka were most usual dogs of the Soviet Union.But they have become famous all over the world.These two dogs together flew into space and did a couple of turns around the Earth's orbit.This happened even before the first space flight of people before Yuri Gagarin.
     Scientists wanted to see how the animals feel before you send people into space first.Belka and Strelka planted inside and launched a satellite into orbit.The flight was difficult and dangerous, because then scientists have not really know what is happening and how a living organism in orbit.But dogs are well behaved and obedient, only barked loudly, seeing the Earth through the porthole.
     Belka and Strelka were flying in space more than a day, and then landed safely.They rejoiced worldwide.

One day I woke up and understood that it was the day of my birthday. I didn't want to celebrate it, I only wanted to have a rest, as it was a weekend. I had breakfast and then I decided to read a book. Suddenly, the door bell rang. I opened the door and there were my friends behind it. They came to my place with salads, pizza and many other tasty things. They brought films, games and I felt really happy I had such friends. Although I wanted to rest that day, I chanced my mind and enjoyed the day with my lovely friends.