изменить форму мн.ч в ед. ч   
1. The books are on the table. 2. The stars are in the sky. 3. Are the man in the classroom? 4. Are the trains in the station? 5. There are some books on the table. 6. Those are mountains. 7. Those are stars. 8. These are queens. 9. They are kings.

The book is on the table.The star is in the sky.Is the man in the classroom.Is the train in the station.There is one book on the table.This is queen.This is king