[ Modal Verbs for Deduction ]
What does ‘could’ imply in this context? It ___ be a mistake.
A. implies obligation
B. implies possibility
C. implies a command
D. implies certainty

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Past, Present, FutureGerund - to Infinitive Jobs3rd Person SingularSo Such Enough TooPossessive PronounsDirect and Indirect SpeechComparison Degree & GerundsGrammar : Structural Common ErrorsTypes of PrepositionOther quiz:
Past Perfect and Past Perfect Continuous › ViewThe formula of the Present Perfect Continuous is…
A. have been + Verb-ing
B. have been + Verb-ed
C. has been + Verb-ing
D. have/has been + Verb-ing
Countable and Uncountable Nouns › View
book
A. countable
B. uncountable
