[ Tenses ]
I …. this Linux distribution by the time you asked for.
A. had downloaded
B. have downloaded
C. downloaded

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Tenses (Present, Past, Future Forms)Past TenseGerund or to InfinitiveProgressive TensesDeterminers & QuantifiersPrepositions of TimeFirst Conditional & Future TensesDefinite and Indefinite ArticlesModal Auxiliaries and Similar ExpressionsGrammar and EssayOther quiz:
Prepositions of Time, Place, and Movement › ViewJohn is… the best employees of our company.
A. under
B. among
C. on
Word Form & Verb Tense › View
People can develop health problems and become ill if they breathe _____ air
A. pollution
B. to pollute
C. polluting
D. polluted