[ Sentence Completion ]
Professor Stevens had studied many caves, but he had —– before seen the ones in Castleton.
A. never
B. whenever
C. yet
D. every
Select your answer:

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Adverbs, Prefixes, and SuffixesComparison Degree & GerundsPast Perfect and Past Perfect Continuous TenseInterjection & Prepositional PhrasesAdjectives and VocabularyGrammar ElementarySimple vs Continuous Past TensePresent TenseVerb BEIdentify The TensesOther quiz:
Grammar › ViewMy mum … in a band when she was younger.
A. came
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He …… when I arrived at 11 pm
A. sleeps
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