[ Phrasal Verb ]
begin working hard
A. Set on
B. Set to
C. set off/out
D. set up

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Language Features: Reflective ArticleTo Infinitive or Bare InfinitivePresent Simple and Continuous TenseIntermediate GrammarArticles and DemonstrativesConjunctive Adverbs and PunctuationFor vs SincePresent Forms and Narrative TensesArticles and PronounsPassive Voice, Question Tag, PrepositionsOther quiz:
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A. and
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A. playing
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