Lucy has a toothache, so I think she ...... go to the dentist.
(should / mustn't / shouldn't )
should
She ...... finish her homework if whe wants to go out.
(must-has to / mustn't / must-have to)
must - has to
It is against the rules to smoke in here. You ...... do it!
(don't have to / mustn't / must-have to)
mustn't
You ...... carry your umbrella - it's a sunny day!
(should / don't have to / must)
don't have to
The team ...... score 5 more points if they want to win!
(must-has to / doesn't have to / should)
must - has to
Iron Man ...... stop Thanos. If not our world will be in danger!
(shouldn't / must-has to / doesn't have to)
must-has to
Captain America ...... fail his most important mission.
(doesn't have to / mustn't / must-has to)
mustn't
Children ...... go to school.
(must-have to / should / shouldn't)
have to
