Помогите пожалуйста номер 3.12

1) Is his sister at home?   Where is his sister?
2) Is her book on the table?  Where is her book
3) Is our computer in the office?  Where is our computer?
4) Is our manager in the country?  Where is our manager?
5) Are your note-books on the table?  Where are your note-books?
6) Are her disketes in the box?  Where are her diskettes?
7) Are his brothers at the theatre?  Where are his brothers?
8) Are there children in the garden? Where are their children?
9) Is his wife at college?  Where is his wife?
10) Is her husband in the hospital? Where is her husband?