вставьте глагол to be в нужной форме
1)...your fasher a teacher
2)that book ... very interesing
3)I... a student
4)Our mother.... a doctor
5)There ... a book on table

1) Is your father a teacher? 2) That book is very interesting. 3) I am a student. 4) Our mother is a doctor. 5) There is a book on THE table - Вы, скорее всего, артикль пропустили.