Use must of mustn't.
1) You ... go out. It is raining heavily
2) Your room is untidy. You ... do it
3) Jane, you're ill. You ... stay in bed
4) Bob has a high temperature. He ... go to school.
5) It`s eleven o'clock. Betty ... go to bed.
6) Jill has a bad tooth. She ... eat much chocolate.
7) You ... play in the street. It's dangerous.
Use have/has to or don't/doesn't have to.
1) You ... be nicer to your parents.
2) I ... go home. Nobody is waiting for me.
3) He ... feed the dog at 6 p.m
4) You ... phone him. He knows everething
5) She ... cook dinner. We are going out tonight.
6) She is very thin. She ... eat more