[ Grammar ]
You ________ seen Giulia at the theatre. She was sitting in the row in front of us!
A. couldn’t
B. can’t have
C. must have
Select your answer:

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Past with ModalsVerb FormsPassive Voice - Mixed TensesGrammar & VocabularyModal Verbs for PossibilityModals and PhrasesLinking WordsTenses, Tag Questions, Phrasal VerbsComplex PrepositionsGrammar (either..or.. and neither..nor..)Other quiz:
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A. was
B. were
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The sun (is, are) not the biggest star.
A. is
B. are
C. was
D. were
