I have to look after my mother because she is ill.
He has to look after his mother because she is ill.
Why does he look after his mother?
I have to study for the chemistry test.
I have to go to bed before ten a clock.
I have to go tothe class.
I have to stay in bed ,because i was ill
I have to stay at home ,because my parents aren't at home.
I have to answer this question because the teacher called my name .
I have to go to mall with my mather.
I have to wash my clothes.
I have to study for a test.
He has to go to clss.
I have to attend an important meeting this afternoon.
Mother is out,so I have to look after the shop.
I have to go to the Children`s Palace to learn the piano.
Students has to go to school on boat.