I must help my sister to do her homework today.
I must water flowers in the morning today.
I don't have to walk our dog today.My sister will do it.
I must phone my grandmother and ask if she needs my help.
İf yes,I must go shopping and buy some food for her.
I must do my homework on History, English and Literature today.
I don't have to clean my room today because I'll do it on Friday.
I don't have to repair our car.My father will do it.