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Modals of Obligation (must/have to/should)

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  • It's not obligatory to wear a tie. You ___________ wear one.
    don't have to
  • I _______ work on Sundays.
    don't have to
  • Don't worry, Timmy. You ____ wash the dishes. I'll do them myself.
    don't have to
  • We_________speak in English in our English class.
    must / have to
  • I wasn't sure what to write for my school project so I asked my father what I _____ do.
    should
  • You _______ put your mobile phone in flight mode when you are on a plane.
    must / have to
  • You are ill. You _________ go to school today.
    shouldn't / don't have to
  • I _____ play computer games. I always play too much and forget to study.
    shouldn't
  • Bullying in schools _____ be stopped right now!
    must / has to
  • Mike _____ remember to feed the fish. It's going to die if he forgets!
    must / has to
  • You __________ eat so much fast food. It's bad for you.
    shouldn't
  • We _______ use a calculator during the exam. The calculations need to be done by ourselves.
    mustn't
  • Slow down or we're going to have an accident. You _________ drive so fast.
    shouldn't
  • The museum is free. You ___________ pay.
    don't have to
  • When she goes sailing, she ________ wear a life jacket. The sea is very dangerous.
    must / has to
  • I don't know how to apologize to Alice after our fight. What _____I do?
    should
  • Tomorrow is Saturday, so Maria __________ wake up early. She won't even set her alarm.
    doesn't have to
  • I think she ___________ save some money for the future. She always spends all she has, it's very irresponsible.
    should
  • You ____ smoke here. It is forbidden.
    must not = mustn't
  • If you want to get fit, you ___________ to the gym
    should / have to
  • You _______ eat in the classroom!
    mustn't
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