Вставьте глагол to be в нужной форме и перевидите предложения: 
1)My mum .........  a very nice.
2)Whose books ........  on the shelf?
3) ....... the students in your group good?
4) I ....... from the C.P.D. Company.
5)They ...... my mother Iren,my father Victor, my sister Ann.