I ...... study this weekend. It's my obligation as a student.
must / have to
mustn't
You ...... feed the animals in the Zoo. It's forbiden!
don't have to
mustn't
must
I ...... make my bed every morning. I know my parents need help at home.
don't have to
must / have to
You ...... help me now. Mum helped me this morning.
must
mustn't
don't have to
She ...... wear a uniform at school. She can wear jeans.
doesn't have to
must / have to
You ...... use your mobile phone in a plane.
mustn't
don't have to
They ...... study harder if they want to pass their exam.
must / have to
don't have to
My husband is cooking tonight so I ...... do it!
must
don't have to
You ...... start a fire in this forest. It is prohibited.
mustn't
don't have to
If Tom wants to be a doctor, he ...... finish university.
mustn't
must / has to
doesn't have to
She ...... wake up early today - it's Sunday.
mustn't
must / have to
doesn't have to
Lucy has a toothache, so I think she ...... go to the dentist.
must / has to
mustn't
She ...... finish her homework if whe wants to go out.
must / have to
mustn't
must / has to
It is against the rules to smoke in here. You ...... do it!
must / have to
mustn't
don't have to
You ...... carry your umbrella - it's a sunny day!
don't have to
must
The team ...... score 5 more points if they want to win!
must / has to
doesn't have to
