The museum is free. You...pay.
don't have to
Students...wear uniforms at school - black pants and white shirts.
have to (must)
You...put salt in her food; the doctor said she can't eat salt.
mustn't
I...hurry up if I want to be at the office on time.
must (have to)
We...hurry. We have a lot of time.
don't have to
You..feed animals at the zoo. It's dangerous for them
mustn't
Angela, you...leave your clothes all over the floor like this.
mustn't
Do you...work next weekend?
have to
You...go now; you can stay a bit longer.
don't have to
It's forbidden. You...do it!
mustn't
You...say sorry; it is okay. I understand.
don't have to
I...speak English well. I need it for my job.
have to (must)
I...wear a tie; I do it because I like wearing ties.
don't have to