Rewrite the sentences into the passive:
1. Millions of tourists visit Astana every year.
2. They use the Saryarka Velodrome mainly for track cycling
events.
3. Kisho Kurokawa made the masterplan of Astana
4. They opened Astana's new university in 2010.
5. Forbes style magazine named Khan Satyr one of the
world's top 10 eco-buildings.
6. The Astana Arena stadium holds 30,000 spectators.​

Astana is visited by millions of tourists every day.Saryarka Velodrome is mainly used for track cycling events.The masterplan of Astana was made by Kisho Kurokawa.Astana's new university was opened in 2010.Khan Satyr was named as one of the world's top 10 eco-buildings by Forbes style magazine.30,000 spectators are held by the Astana Arena stadium.