[ Adverb Clauses ]
He couldn’t go to the party __________ he was feeling sick.
A. until
B. if
C. as
D. before

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Gerund, Infinitive & ModalsTenses & PrepositionSome & AnyPassive Voice - Present Simple and Past SimplePassive VoiceTransitional WordsGerunds and InfinitivesPresent or Past TensesCountable - UncountableGrammar - Nouns, Verbs, and AdjectivesOther quiz:
Grammar › ViewI know Juan ____________ has just adopted a pet.
A. which
B. who
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Ocean currents……play an important part in regulating global climate.
A. are know to
B. thought to
C. are believed that they