[ Tenses ]
We ____ electronic devices since the invention of the first computer in the 20th century.
A. used
B. Have used
C. Will use
D. Use
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Tenses StructureSimple and Past TensesPhrases and ClausesRelative Clauses and UsageAdjective ClauseGrammar - Verb FormsComplex Sentences with Adverb ClausesGrammar: Imperative and Exclamatory SentencesGrammar MistakesOpinion / AgreementOther quiz:
Grammar › ViewSomone who will not share with you
A. Lazy
B. Shy
C. Greedy
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She’s very fond _______ dogs.
A. at
B. in
C. about
D. of
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A. himself
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C. myself
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Regular exercise ________ to boost the immune system.
A. help
B. helps