[ Modal Verbs ]
We … talk to each other because it is an exam.
A. mustn’t
B. had to
C. should
D. need to

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Modals and PhrasesNoun Phrases and AdverbialsWho am I?Perfect Tenses and VocabularyPreposition & GerundConjunctions and TransitionsNoun and PronounGrammar - Present Perfectwas werePossessive NounsOther quiz:
Grammar › Viewn the sentence “He should study harder,” what type of verb is “should”?
A. action
B. non-action
C. modal
D. helping
Modal Verbs › View
All school rules __________ be obeyed.
A. must
B. may