You ___ be serious! Why? What’s the problem? ... | GrammarQuiz.Net

[ Modals ]

You ___ be serious!

Why? What’s the problem?

A. can’t

B. may

C. should

Select your answer:

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Prepositions of Place & Time Continuous Tense Auxiliary Verbs Past Continuous vs Past Simple Sentences and Non Sentences Sentence Structure Employment Vocabulary Must or Mus not Exclamation

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