[ Perfect Modals ]
He __ committed the crime, as he had both the motive and the opportunity.
A. can’t have
B. could have
C. would have

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Article & PrepositionConstrative ConjunctionAbstract NounsIndependent ClausesIf Conditional Zero and OneAdverbial Clause / If / ComparativesVerb Types and TensesArticles and DemonstrativesQuantifiers and ArticlesDemonstrative Pronouns and Verb TensesOther quiz:
Tenses › ViewThe laptop is not working because you _____________ it yet.
A. didn’t charge
B. haven’t charged
C. charged
D. have charged
Grammar › View
What might a funny name be used for?
A. A serious document
B. A silly name you invent
C. An official form