[ Modals and Past Tenses ]
What is the difference between ‘mustn’t’ and ‘don’t have to’?
A. ‘Mustn’t’ indicates prohibition, while ‘don’t have to’ indicates lack of necessity.
B. ‘Mustn’t’ indicates permission, while ‘don’t have to’ indicates obligation.
C. ‘Mustn’t’ indicates necessity, while ‘don’t have to’ indicates possibility.
D. ‘Mustn’t’ indicates ability, while ‘don’t have to’ indicates probability.
Select your answer:
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during, for, whileModal Probability-Ing and Infinitive Verb PatternsMixed ConditionalBasic TensesVerbs + Gerund or InfinitiveGerund or InfinitivesComparative AdjectivesGrammar - direct/indirect objectsOther quiz:
Grammar › ViewChoose the proper sentence
A. He has already seen that film
B. He already saw that film
C. He have already seen that film
D. He already has seen that film
Modal Verbs › View
My back has been hurting for weeks. I__________go to the doctor’s.
A. don’t have to
B. have to
C. mustn’t
D. must