QuestenaUn entraînement qui indique quoi revoir ensuite
RechercheCréer un test
Question 76

The security seal is unbroken, so this ___ the specimen jar that was opened this morning.

  1. mustn't be
  2. must be not
  3. can't to be
  4. can't beBonne réponse

Explication

Can't be expresses a confident negative deduction from the intact security seal. Mustn't be would sound like a prohibition against identity rather than a logical conclusion about the jar.

Continuer avec ce test

Commencer l’entraînement
Comprendre ce thème (≈4 min)Retour au test
Question 76: The security seal is unbroken, so this ___ the specimen jar… · English Modal Verbs · Questena