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I met _____ engineer at the conference.
A. the
B. an
C. a
D. no article

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Subject Verb Agreement; Indefinite PronounsSubordinating and Coordinating ConjunctionsBe used to vs used toZero & First ContidionalSimple Verb TensesPast Simple TensesPassive VoicesAdverbs, Infinitives, Definite ArticlePrepositions and Preposition PhrasesPossessive PronounsOther quiz:
Grammar › Viewa person who actively opposes or is hostile to someone or something; an adversary
A. protagonist
B. flat character
C. antagonist
D. round character
English Article › View
____________house
A. The
B. An
C. A