[ Grammar ]
We keep the …………… copies of all our reports in a special master file.
A. primitive
B. characteristic
C. original
D. elder

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Grammar and PrepositionsNarrative, Past TensesGrammar, Literature, and VocabularyIn/On/At + TimeEssential and Nonessential ClausesRelative PronounSimple, Compound, Complex SentencesGrammar : can, could and be able toSimple PastGrammar and PunctuationOther quiz:
Articles › ViewShe is reading ___ interesting book.
A. the
B. a
C. some
D. an
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There projects have proved to be very _____ in dealing with global climate change
A. effectively
B. effect
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A. motive
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Grammar › View
If only they _____ in the building when the bomb exploded.
A. hadn’t been staying
B. hadn’t stay
C. didn’t stay
D. weren’t staying
