1. There were books and exercise-books on the desk. 2. There are some interesting stories in this book/ 3. There are 7 days in every week. 4. There are two semestres in a school year. 5. There are no students in the auditorium. 6. There were some mistakes in his test. 7. There is a lift in the house. 8. There will be a garden near the house. 9. Is there a school in the village? - No, there isn't. 10. There will be many new books in the library.